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Finding the Fourth Proportional to 579,025.60, 868,246.80 and 342,440.80

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Solution

The fourth proportional to 579,025.60, 868,246.80 and 342,440.80 is: 513,488.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,025.60 : 868,246.80 = 342,440.80 : x
  2. Step 2: Convert to fraction form
    579,025.60/868,246.80 = 342,440.80/x
  3. Step 3: Cross multiply
    579,025.60x = 868,246.80 × 342,440.80
  4. Step 4: Simplify right side
    579,025.60x = 297,323,128,789.44
  5. Step 5: Solve for x
    x = 297,323,128,789.44/579,025.60
  6. Step 6: Final answer
    x = 513,488.75

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Double scale
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Similar ratio
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1.5x scale

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.