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Finding the Fourth Proportional to 391,876.91, 537,267.80 and 384,791.03

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Solution

The fourth proportional to 391,876.91, 537,267.80 and 384,791.03 is: 527,552.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,876.91 : 537,267.80 = 384,791.03 : x
  2. Step 2: Convert to fraction form
    391,876.91/537,267.80 = 384,791.03/x
  3. Step 3: Cross multiply
    391,876.91x = 537,267.80 × 384,791.03
  4. Step 4: Simplify right side
    391,876.91x = 206,735,828,423.47
  5. Step 5: Solve for x
    x = 206,735,828,423.47/391,876.91
  6. Step 6: Final answer
    x = 527,552.98

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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.