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Finding the Fourth Proportional to 649,686.30, 974,529.45 and 275,660.70

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Solution

The fourth proportional to 649,686.30, 974,529.45 and 275,660.70 is: 413,491.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,686.30 : 974,529.45 = 275,660.70 : x
  2. Step 2: Convert to fraction form
    649,686.30/974,529.45 = 275,660.70/x
  3. Step 3: Cross multiply
    649,686.30x = 974,529.45 × 275,660.70
  4. Step 4: Simplify right side
    649,686.30x = 268,639,470,357.62
  5. Step 5: Solve for x
    x = 268,639,470,357.62/649,686.30
  6. Step 6: Final answer
    x = 413,491.05

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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.