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Finding the Fourth Proportional to 603,625,862.60, 905,438,793.90 and 215,461,356.20

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Solution

The fourth proportional to 603,625,862.60, 905,438,793.90 and 215,461,356.20 is: 323,192,034.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,625,862.60 : 905,438,793.90 = 215,461,356.20 : x
  2. Step 2: Convert to fraction form
    603,625,862.60/905,438,793.90 = 215,461,356.20/x
  3. Step 3: Cross multiply
    603,625,862.60x = 905,438,793.90 × 215,461,356.20
  4. Step 4: Simplify right side
    603,625,862.60x = 195,087,070,489,786,272
  5. Step 5: Solve for x
    x = 195,087,070,489,786,272/603,625,862.60
  6. Step 6: Final answer
    x = 323,192,034.30

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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.