Home / 522,835,505.52-720,184,253.40-398,860,949.04

Finding the Fourth Proportional to 522,835,505.52, 720,184,253.40 and 398,860,949.04

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Solution

The fourth proportional to 522,835,505.52, 720,184,253.40 and 398,860,949.04 is: 549,414,436.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,835,505.52 : 720,184,253.40 = 398,860,949.04 : x
  2. Step 2: Convert to fraction form
    522,835,505.52/720,184,253.40 = 398,860,949.04/x
  3. Step 3: Cross multiply
    522,835,505.52x = 720,184,253.40 × 398,860,949.04
  4. Step 4: Simplify right side
    522,835,505.52x = 287,253,374,794,787,840
  5. Step 5: Solve for x
    x = 287,253,374,794,787,840/522,835,505.52
  6. Step 6: Final answer
    x = 549,414,436.78

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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.