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Finding the Fourth Proportional to 625,393,642.96, 863,146,686.96 and 347,024,847.04

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Solution

The fourth proportional to 625,393,642.96, 863,146,686.96 and 347,024,847.04 is: 478,951,697.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,393,642.96 : 863,146,686.96 = 347,024,847.04 : x
  2. Step 2: Convert to fraction form
    625,393,642.96/863,146,686.96 = 347,024,847.04/x
  3. Step 3: Cross multiply
    625,393,642.96x = 863,146,686.96 × 347,024,847.04
  4. Step 4: Simplify right side
    625,393,642.96x = 299,533,347,015,376,768
  5. Step 5: Solve for x
    x = 299,533,347,015,376,768/625,393,642.96
  6. Step 6: Final answer
    x = 478,951,697.68

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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.