Home / 913,120.20-1,369,680.30-440,728.20

Finding the Fourth Proportional to 913,120.20, 1,369,680.30 and 440,728.20

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Solution

The fourth proportional to 913,120.20, 1,369,680.30 and 440,728.20 is: 661,092.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,120.20 : 1,369,680.30 = 440,728.20 : x
  2. Step 2: Convert to fraction form
    913,120.20/1,369,680.30 = 440,728.20/x
  3. Step 3: Cross multiply
    913,120.20x = 1,369,680.30 × 440,728.20
  4. Step 4: Simplify right side
    913,120.20x = 603,656,733,194.46
  5. Step 5: Solve for x
    x = 603,656,733,194.46/913,120.20
  6. Step 6: Final answer
    x = 661,092.30

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