Home / 520,924.20-781,386.30-268,981.80

Finding the Fourth Proportional to 520,924.20, 781,386.30 and 268,981.80

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Solution

The fourth proportional to 520,924.20, 781,386.30 and 268,981.80 is: 403,472.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,924.20 : 781,386.30 = 268,981.80 : x
  2. Step 2: Convert to fraction form
    520,924.20/781,386.30 = 268,981.80/x
  3. Step 3: Cross multiply
    520,924.20x = 781,386.30 × 268,981.80
  4. Step 4: Simplify right side
    520,924.20x = 210,178,693,469.34
  5. Step 5: Solve for x
    x = 210,178,693,469.34/520,924.20
  6. Step 6: Final answer
    x = 403,472.70

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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.