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Finding the Fourth Proportional to 693,062.87, 956,364.42 and 387,096.78

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Solution

The fourth proportional to 693,062.87, 956,364.42 and 387,096.78 is: 534,158.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,062.87 : 956,364.42 = 387,096.78 : x
  2. Step 2: Convert to fraction form
    693,062.87/956,364.42 = 387,096.78/x
  3. Step 3: Cross multiply
    693,062.87x = 956,364.42 × 387,096.78
  4. Step 4: Simplify right side
    693,062.87x = 370,205,592,526.55
  5. Step 5: Solve for x
    x = 370,205,592,526.55/693,062.87
  6. Step 6: Final answer
    x = 534,158.75

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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.