Home / 1,122,078,672.90-1,683,118,009.35-509,858,640.90

Finding the Fourth Proportional to 1,122,078,672.90, 1,683,118,009.35 and 509,858,640.90

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Solution

The fourth proportional to 1,122,078,672.90, 1,683,118,009.35 and 509,858,640.90 is: 764,787,961.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,078,672.90 : 1,683,118,009.35 = 509,858,640.90 : x
  2. Step 2: Convert to fraction form
    1,122,078,672.90/1,683,118,009.35 = 509,858,640.90/x
  3. Step 3: Cross multiply
    1,122,078,672.90x = 1,683,118,009.35 × 509,858,640.90
  4. Step 4: Simplify right side
    1,122,078,672.90x = 858,152,260,721,504,384
  5. Step 5: Solve for x
    x = 858,152,260,721,504,384/1,122,078,672.90
  6. Step 6: Final answer
    x = 764,787,961.35

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Half scale
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Double scale
Find fourth proportional to 1,122,078,673.90, 1,683,118,010.85 and 509,858,641.90
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.