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Finding the Fourth Proportional to 502,296.80, 755,194.80 and 425,314.40

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Solution

The fourth proportional to 502,296.80, 755,194.80 and 425,314.40 is: 639,453.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,296.80 : 755,194.80 = 425,314.40 : x
  2. Step 2: Convert to fraction form
    502,296.80/755,194.80 = 425,314.40/x
  3. Step 3: Cross multiply
    502,296.80x = 755,194.80 × 425,314.40
  4. Step 4: Simplify right side
    502,296.80x = 321,195,223,245.12
  5. Step 5: Solve for x
    x = 321,195,223,245.12/502,296.80
  6. Step 6: Final answer
    x = 639,453.05

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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.