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Finding the Fourth Proportional to 498,252.60, 687,584.80 and 283,392.40

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Solution

The fourth proportional to 498,252.60, 687,584.80 and 283,392.40 is: 391,079.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,252.60 : 687,584.80 = 283,392.40 : x
  2. Step 2: Convert to fraction form
    498,252.60/687,584.80 = 283,392.40/x
  3. Step 3: Cross multiply
    498,252.60x = 687,584.80 × 283,392.40
  4. Step 4: Simplify right side
    498,252.60x = 194,856,306,675.52
  5. Step 5: Solve for x
    x = 194,856,306,675.52/498,252.60
  6. Step 6: Final answer
    x = 391,079.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.