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Finding the Fourth Proportional to 391,963.15, 537,387.64 and 384,877.27

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Solution

The fourth proportional to 391,963.15, 537,387.64 and 384,877.27 is: 527,672.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,963.15 : 537,387.64 = 384,877.27 : x
  2. Step 2: Convert to fraction form
    391,963.15/537,387.64 = 384,877.27/x
  3. Step 3: Cross multiply
    391,963.15x = 537,387.64 × 384,877.27
  4. Step 4: Simplify right side
    391,963.15x = 206,828,287,814.94
  5. Step 5: Solve for x
    x = 206,828,287,814.94/391,963.15
  6. Step 6: Final answer
    x = 527,672.79

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.