Home / 522,607,351.20-721,192,421.52-287,652,988.32

Finding the Fourth Proportional to 522,607,351.20, 721,192,421.52 and 287,652,988.32

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Solution

The fourth proportional to 522,607,351.20, 721,192,421.52 and 287,652,988.32 is: 396,957,973.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,607,351.20 : 721,192,421.52 = 287,652,988.32 : x
  2. Step 2: Convert to fraction form
    522,607,351.20/721,192,421.52 = 287,652,988.32/x
  3. Step 3: Cross multiply
    522,607,351.20x = 721,192,421.52 × 287,652,988.32
  4. Step 4: Simplify right side
    522,607,351.20x = 207,453,155,203,965,056
  5. Step 5: Solve for x
    x = 207,453,155,203,965,056/522,607,351.20
  6. Step 6: Final answer
    x = 396,957,973.76

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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.