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Finding the Fourth Proportional to 768,394.71, 1,060,286.90 and 428,877.27

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Solution

The fourth proportional to 768,394.71, 1,060,286.90 and 428,877.27 is: 591,796.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,394.71 : 1,060,286.90 = 428,877.27 : x
  2. Step 2: Convert to fraction form
    768,394.71/1,060,286.90 = 428,877.27/x
  3. Step 3: Cross multiply
    768,394.71x = 1,060,286.90 × 428,877.27
  4. Step 4: Simplify right side
    768,394.71x = 454,732,948,944.38
  5. Step 5: Solve for x
    x = 454,732,948,944.38/768,394.71
  6. Step 6: Final answer
    x = 591,796.04

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1.5x scale

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.