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Finding the Fourth Proportional to 612,184.27, 915,590.49 and 545,188.76

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Solution

The fourth proportional to 612,184.27, 915,590.49 and 545,188.76 is: 815,391.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,184.27 : 915,590.49 = 545,188.76 : x
  2. Step 2: Convert to fraction form
    612,184.27/915,590.49 = 545,188.76/x
  3. Step 3: Cross multiply
    612,184.27x = 915,590.49 × 545,188.76
  4. Step 4: Simplify right side
    612,184.27x = 499,169,643,910.89
  5. Step 5: Solve for x
    x = 499,169,643,910.89/612,184.27
  6. Step 6: Final answer
    x = 815,391.16

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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.