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Finding the Fourth Proportional to 681,505.90, 940,484.57 and 375,593.31

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Solution

The fourth proportional to 681,505.90, 940,484.57 and 375,593.31 is: 518,322.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,505.90 : 940,484.57 = 375,593.31 : x
  2. Step 2: Convert to fraction form
    681,505.90/940,484.57 = 375,593.31/x
  3. Step 3: Cross multiply
    681,505.90x = 940,484.57 × 375,593.31
  4. Step 4: Simplify right side
    681,505.90x = 353,239,710,772.26
  5. Step 5: Solve for x
    x = 353,239,710,772.26/681,505.90
  6. Step 6: Final answer
    x = 518,322.31

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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.