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Finding the Fourth Proportional to 723,272.76, 998,114.72 and 400,974.57

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Solution

The fourth proportional to 723,272.76, 998,114.72 and 400,974.57 is: 553,343.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,272.76 : 998,114.72 = 400,974.57 : x
  2. Step 2: Convert to fraction form
    723,272.76/998,114.72 = 400,974.57/x
  3. Step 3: Cross multiply
    723,272.76x = 998,114.72 × 400,974.57
  4. Step 4: Simplify right side
    723,272.76x = 400,218,618,657.80
  5. Step 5: Solve for x
    x = 400,218,618,657.80/723,272.76
  6. Step 6: Final answer
    x = 553,343.97

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.