Home / 521,724.20-782,586.30-514,725.80

Finding the Fourth Proportional to 521,724.20, 782,586.30 and 514,725.80

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Solution

The fourth proportional to 521,724.20, 782,586.30 and 514,725.80 is: 772,088.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,724.20 : 782,586.30 = 514,725.80 : x
  2. Step 2: Convert to fraction form
    521,724.20/782,586.30 = 514,725.80/x
  3. Step 3: Cross multiply
    521,724.20x = 782,586.30 × 514,725.80
  4. Step 4: Simplify right side
    521,724.20x = 402,817,359,336.54
  5. Step 5: Solve for x
    x = 402,817,359,336.54/521,724.20
  6. Step 6: Final answer
    x = 772,088.70

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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.