Home / 720,981,607.20-1,081,472,410.80-478,644,511.20

Finding the Fourth Proportional to 720,981,607.20, 1,081,472,410.80 and 478,644,511.20

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Solution

The fourth proportional to 720,981,607.20, 1,081,472,410.80 and 478,644,511.20 is: 717,966,766.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,981,607.20 : 1,081,472,410.80 = 478,644,511.20 : x
  2. Step 2: Convert to fraction form
    720,981,607.20/1,081,472,410.80 = 478,644,511.20/x
  3. Step 3: Cross multiply
    720,981,607.20x = 1,081,472,410.80 × 478,644,511.20
  4. Step 4: Simplify right side
    720,981,607.20x = 517,640,833,443,651,584
  5. Step 5: Solve for x
    x = 517,640,833,443,651,584/720,981,607.20
  6. Step 6: Final answer
    x = 717,966,766.80

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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.