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Finding the Fourth Proportional to 681,502.40, 940,479.72 and 375,589.80

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Solution

The fourth proportional to 681,502.40, 940,479.72 and 375,589.80 is: 518,317.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,502.40 : 940,479.72 = 375,589.80 : x
  2. Step 2: Convert to fraction form
    681,502.40/940,479.72 = 375,589.80/x
  3. Step 3: Cross multiply
    681,502.40x = 940,479.72 × 375,589.80
  4. Step 4: Simplify right side
    681,502.40x = 353,234,589,938.86
  5. Step 5: Solve for x
    x = 353,234,589,938.86/681,502.40
  6. Step 6: Final answer
    x = 518,317.46

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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.