Home / 1,020,921,947.20-1,531,382,920.80-998,247,131.20

Finding the Fourth Proportional to 1,020,921,947.20, 1,531,382,920.80 and 998,247,131.20

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Solution

The fourth proportional to 1,020,921,947.20, 1,531,382,920.80 and 998,247,131.20 is: 1,497,370,696.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,921,947.20 : 1,531,382,920.80 = 998,247,131.20 : x
  2. Step 2: Convert to fraction form
    1,020,921,947.20/1,531,382,920.80 = 998,247,131.20/x
  3. Step 3: Cross multiply
    1,020,921,947.20x = 1,531,382,920.80 × 998,247,131.20
  4. Step 4: Simplify right side
    1,020,921,947.20x = 1,528,698,607,457,276,928
  5. Step 5: Solve for x
    x = 1,528,698,607,457,276,928/1,020,921,947.20
  6. Step 6: Final answer
    x = 1,497,370,696.80

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Double scale
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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.