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Finding the Fourth Proportional to 581,032.43, 801,805.56 and 319,388.61

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Solution

The fourth proportional to 581,032.43, 801,805.56 and 319,388.61 is: 440,745.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,032.43 : 801,805.56 = 319,388.61 : x
  2. Step 2: Convert to fraction form
    581,032.43/801,805.56 = 319,388.61/x
  3. Step 3: Cross multiply
    581,032.43x = 801,805.56 × 319,388.61
  4. Step 4: Simplify right side
    581,032.43x = 256,087,561,765.76
  5. Step 5: Solve for x
    x = 256,087,561,765.76/581,032.43
  6. Step 6: Final answer
    x = 440,745.73

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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.