Home / 663,561,631.20-995,342,446.80-421,497,861.60

Finding the Fourth Proportional to 663,561,631.20, 995,342,446.80 and 421,497,861.60

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Solution

The fourth proportional to 663,561,631.20, 995,342,446.80 and 421,497,861.60 is: 632,246,792.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,561,631.20 : 995,342,446.80 = 421,497,861.60 : x
  2. Step 2: Convert to fraction form
    663,561,631.20/995,342,446.80 = 421,497,861.60/x
  3. Step 3: Cross multiply
    663,561,631.20x = 995,342,446.80 × 421,497,861.60
  4. Step 4: Simplify right side
    663,561,631.20x = 419,534,712,885,911,744
  5. Step 5: Solve for x
    x = 419,534,712,885,911,744/663,561,631.20
  6. Step 6: Final answer
    x = 632,246,792.40

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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.