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Finding the Fourth Proportional to 574,377.40, 861,738.90 and 308,265.40

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Solution

The fourth proportional to 574,377.40, 861,738.90 and 308,265.40 is: 462,490.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,377.40 : 861,738.90 = 308,265.40 : x
  2. Step 2: Convert to fraction form
    574,377.40/861,738.90 = 308,265.40/x
  3. Step 3: Cross multiply
    574,377.40x = 861,738.90 × 308,265.40
  4. Step 4: Simplify right side
    574,377.40x = 265,644,286,704.06
  5. Step 5: Solve for x
    x = 265,644,286,704.06/574,377.40
  6. Step 6: Final answer
    x = 462,490.84

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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.