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Finding the Fourth Proportional to 681,718.28, 940,728.96 and 375,778.85

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Solution

The fourth proportional to 681,718.28, 940,728.96 and 375,778.85 is: 518,551.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,718.28 : 940,728.96 = 375,778.85 : x
  2. Step 2: Convert to fraction form
    681,718.28/940,728.96 = 375,778.85/x
  3. Step 3: Cross multiply
    681,718.28x = 940,728.96 × 375,778.85
  4. Step 4: Simplify right side
    681,718.28x = 353,506,042,046.85
  5. Step 5: Solve for x
    x = 353,506,042,046.85/681,718.28
  6. Step 6: Final answer
    x = 518,551.51

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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.