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Finding the Fourth Proportional to 579,631.60, 869,155.80 and 343,046.80

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Solution

The fourth proportional to 579,631.60, 869,155.80 and 343,046.80 is: 514,397.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,631.60 : 869,155.80 = 343,046.80 : x
  2. Step 2: Convert to fraction form
    579,631.60/869,155.80 = 343,046.80/x
  3. Step 3: Cross multiply
    579,631.60x = 869,155.80 × 343,046.80
  4. Step 4: Simplify right side
    579,631.60x = 298,161,115,891.44
  5. Step 5: Solve for x
    x = 298,161,115,891.44/579,631.60
  6. Step 6: Final answer
    x = 514,397.62

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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.