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Finding the Fourth Proportional to 538,488.60, 807,732.90 and 486,000.60

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Solution

The fourth proportional to 538,488.60, 807,732.90 and 486,000.60 is: 729,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,488.60 : 807,732.90 = 486,000.60 : x
  2. Step 2: Convert to fraction form
    538,488.60/807,732.90 = 486,000.60/x
  3. Step 3: Cross multiply
    538,488.60x = 807,732.90 × 486,000.60
  4. Step 4: Simplify right side
    538,488.60x = 392,558,674,039.74
  5. Step 5: Solve for x
    x = 392,558,674,039.74/538,488.60
  6. Step 6: Final answer
    x = 729,000.90

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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.