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Finding the Fourth Proportional to 659,118.60, 987,900.30 and 492,712.20

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Solution

The fourth proportional to 659,118.60, 987,900.30 and 492,712.20 is: 738,487.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,118.60 : 987,900.30 = 492,712.20 : x
  2. Step 2: Convert to fraction form
    659,118.60/987,900.30 = 492,712.20/x
  3. Step 3: Cross multiply
    659,118.60x = 987,900.30 × 492,712.20
  4. Step 4: Simplify right side
    659,118.60x = 486,750,530,193.66
  5. Step 5: Solve for x
    x = 486,750,530,193.66/659,118.60
  6. Step 6: Final answer
    x = 738,487.02

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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.