Home / 515,540.20-772,654.20-459,115.60

Finding the Fourth Proportional to 515,540.20, 772,654.20 and 459,115.60

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Solution

The fourth proportional to 515,540.20, 772,654.20 and 459,115.60 is: 688,089.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,540.20 : 772,654.20 = 459,115.60 : x
  2. Step 2: Convert to fraction form
    515,540.20/772,654.20 = 459,115.60/x
  3. Step 3: Cross multiply
    515,540.20x = 772,654.20 × 459,115.60
  4. Step 4: Simplify right side
    515,540.20x = 354,737,596,625.52
  5. Step 5: Solve for x
    x = 354,737,596,625.52/515,540.20
  6. Step 6: Final answer
    x = 688,089.11

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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.