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Finding the Fourth Proportional to 424,585.44, 636,806.52 and 120,958.20

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Solution

The fourth proportional to 424,585.44, 636,806.52 and 120,958.20 is: 181,416.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,585.44 : 636,806.52 = 120,958.20 : x
  2. Step 2: Convert to fraction form
    424,585.44/636,806.52 = 120,958.20/x
  3. Step 3: Cross multiply
    424,585.44x = 636,806.52 × 120,958.20
  4. Step 4: Simplify right side
    424,585.44x = 77,026,970,407.46
  5. Step 5: Solve for x
    x = 77,026,970,407.46/424,585.44
  6. Step 6: Final answer
    x = 181,416.89

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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.