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Finding the Fourth Proportional to 424,388.84, 636,187.77 and 291,331.76

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Solution

The fourth proportional to 424,388.84, 636,187.77 and 291,331.76 is: 436,726.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,388.84 : 636,187.77 = 291,331.76 : x
  2. Step 2: Convert to fraction form
    424,388.84/636,187.77 = 291,331.76/x
  3. Step 3: Cross multiply
    424,388.84x = 636,187.77 × 291,331.76
  4. Step 4: Simplify right side
    424,388.84x = 185,341,699,543.64
  5. Step 5: Solve for x
    x = 185,341,699,543.64/424,388.84
  6. Step 6: Final answer
    x = 436,726.14

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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.