Home / 1,424,626,648.19-1,965,984,960.90-789,588,139.25

Finding the Fourth Proportional to 1,424,626,648.19, 1,965,984,960.90 and 789,588,139.25

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Solution

The fourth proportional to 1,424,626,648.19, 1,965,984,960.90 and 789,588,139.25 is: 1,089,631,735.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424,626,648.19 : 1,965,984,960.90 = 789,588,139.25 : x
  2. Step 2: Convert to fraction form
    1,424,626,648.19/1,965,984,960.90 = 789,588,139.25/x
  3. Step 3: Cross multiply
    1,424,626,648.19x = 1,965,984,960.90 × 789,588,139.25
  4. Step 4: Simplify right side
    1,424,626,648.19x = 1,552,318,407,070,515,200
  5. Step 5: Solve for x
    x = 1,552,318,407,070,515,200/1,424,626,648.19
  6. Step 6: Final answer
    x = 1,089,631,735.47

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Half scale
Find fourth proportional to 2,849,253,296.38, 3,931,969,921.80 and 1,579,176,278.50
Double scale
Find fourth proportional to 1,424,626,649.19, 1,965,984,962.28 and 789,588,140.25
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.