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Finding the Fourth Proportional to 587,456.20, 881,184.30 and 388,001.80

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Solution

The fourth proportional to 587,456.20, 881,184.30 and 388,001.80 is: 582,002.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,456.20 : 881,184.30 = 388,001.80 : x
  2. Step 2: Convert to fraction form
    587,456.20/881,184.30 = 388,001.80/x
  3. Step 3: Cross multiply
    587,456.20x = 881,184.30 × 388,001.80
  4. Step 4: Simplify right side
    587,456.20x = 341,901,094,531.74
  5. Step 5: Solve for x
    x = 341,901,094,531.74/587,456.20
  6. Step 6: Final answer
    x = 582,002.70

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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.