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Finding the Fourth Proportional to 542,009.76, 812,127.68 and 328,129.39

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Solution

The fourth proportional to 542,009.76, 812,127.68 and 328,129.39 is: 491,657.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,009.76 : 812,127.68 = 328,129.39 : x
  2. Step 2: Convert to fraction form
    542,009.76/812,127.68 = 328,129.39/x
  3. Step 3: Cross multiply
    542,009.76x = 812,127.68 × 328,129.39
  4. Step 4: Simplify right side
    542,009.76x = 266,482,960,240.52
  5. Step 5: Solve for x
    x = 266,482,960,240.52/542,009.76
  6. Step 6: Final answer
    x = 491,657.12

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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.