Home / 522,607,352.20-721,192,422.90-287,652,989.32

Finding the Fourth Proportional to 522,607,352.20, 721,192,422.90 and 287,652,989.32

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Solution

The fourth proportional to 522,607,352.20, 721,192,422.90 and 287,652,989.32 is: 396,957,975.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,607,352.20 : 721,192,422.90 = 287,652,989.32 : x
  2. Step 2: Convert to fraction form
    522,607,352.20/721,192,422.90 = 287,652,989.32/x
  3. Step 3: Cross multiply
    522,607,352.20x = 721,192,422.90 × 287,652,989.32
  4. Step 4: Simplify right side
    522,607,352.20x = 207,453,156,322,118,624
  5. Step 5: Solve for x
    x = 207,453,156,322,118,624/522,607,352.20
  6. Step 6: Final answer
    x = 396,957,975.14

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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.