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Finding the Fourth Proportional to 681,449.49, 940,406.51 and 375,536.86

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Solution

The fourth proportional to 681,449.49, 940,406.51 and 375,536.86 is: 518,244.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,449.49 : 940,406.51 = 375,536.86 : x
  2. Step 2: Convert to fraction form
    681,449.49/940,406.51 = 375,536.86/x
  3. Step 3: Cross multiply
    681,449.49x = 940,406.51 × 375,536.86
  4. Step 4: Simplify right side
    681,449.49x = 353,157,306,476.78
  5. Step 5: Solve for x
    x = 353,157,306,476.78/681,449.49
  6. Step 6: Final answer
    x = 518,244.29

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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.