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Finding the Fourth Proportional to 502,546.20, 753,819.30 and 478,051.80

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Solution

The fourth proportional to 502,546.20, 753,819.30 and 478,051.80 is: 717,077.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,546.20 : 753,819.30 = 478,051.80 : x
  2. Step 2: Convert to fraction form
    502,546.20/753,819.30 = 478,051.80/x
  3. Step 3: Cross multiply
    502,546.20x = 753,819.30 × 478,051.80
  4. Step 4: Simplify right side
    502,546.20x = 360,364,673,239.74
  5. Step 5: Solve for x
    x = 360,364,673,239.74/502,546.20
  6. Step 6: Final answer
    x = 717,077.70

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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.