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Finding the Fourth Proportional to 681,420.53, 940,366.63 and 375,507.86

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Solution

The fourth proportional to 681,420.53, 940,366.63 and 375,507.86 is: 518,204.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,420.53 : 940,366.63 = 375,507.86 : x
  2. Step 2: Convert to fraction form
    681,420.53/940,366.63 = 375,507.86/x
  3. Step 3: Cross multiply
    681,420.53x = 940,366.63 × 375,507.86
  4. Step 4: Simplify right side
    681,420.53x = 353,115,056,144.88
  5. Step 5: Solve for x
    x = 353,115,056,144.88/681,420.53
  6. Step 6: Final answer
    x = 518,204.31

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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.