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Finding the Fourth Proportional to 681,644.80, 940,627.36 and 375,723.58

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Solution

The fourth proportional to 681,644.80, 940,627.36 and 375,723.58 is: 518,475.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,644.80 : 940,627.36 = 375,723.58 : x
  2. Step 2: Convert to fraction form
    681,644.80/940,627.36 = 375,723.58/x
  3. Step 3: Cross multiply
    681,644.80x = 940,627.36 × 375,723.58
  4. Step 4: Simplify right side
    681,644.80x = 353,415,879,145.15
  5. Step 5: Solve for x
    x = 353,415,879,145.15/681,644.80
  6. Step 6: Final answer
    x = 518,475.13

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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.