Home / 522,607,339.20-721,192,404.96-287,652,976.32

Finding the Fourth Proportional to 522,607,339.20, 721,192,404.96 and 287,652,976.32

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Solution

The fourth proportional to 522,607,339.20, 721,192,404.96 and 287,652,976.32 is: 396,957,957.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,607,339.20 : 721,192,404.96 = 287,652,976.32 : x
  2. Step 2: Convert to fraction form
    522,607,339.20/721,192,404.96 = 287,652,976.32/x
  3. Step 3: Cross multiply
    522,607,339.20x = 721,192,404.96 × 287,652,976.32
  4. Step 4: Simplify right side
    522,607,339.20x = 207,453,141,786,122,752
  5. Step 5: Solve for x
    x = 207,453,141,786,122,752/522,607,339.20
  6. Step 6: Final answer
    x = 396,957,957.20

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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.