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Finding the Fourth Proportional to 693,041,714.76, 956,444,490.09 and 391,522,450.01

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Solution

The fourth proportional to 693,041,714.76, 956,444,490.09 and 391,522,450.01 is: 540,327,489.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,041,714.76 : 956,444,490.09 = 391,522,450.01 : x
  2. Step 2: Convert to fraction form
    693,041,714.76/956,444,490.09 = 391,522,450.01/x
  3. Step 3: Cross multiply
    693,041,714.76x = 956,444,490.09 × 391,522,450.01
  4. Step 4: Simplify right side
    693,041,714.76x = 374,469,490,053,819,776
  5. Step 5: Solve for x
    x = 374,469,490,053,819,776/693,041,714.76
  6. Step 6: Final answer
    x = 540,327,489.79

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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.