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Finding the Fourth Proportional to 591,081.30, 815,712.32 and 349,570.89

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Solution

The fourth proportional to 591,081.30, 815,712.32 and 349,570.89 is: 482,419.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,081.30 : 815,712.32 = 349,570.89 : x
  2. Step 2: Convert to fraction form
    591,081.30/815,712.32 = 349,570.89/x
  3. Step 3: Cross multiply
    591,081.30x = 815,712.32 × 349,570.89
  4. Step 4: Simplify right side
    591,081.30x = 285,149,282,560.29
  5. Step 5: Solve for x
    x = 285,149,282,560.29/591,081.30
  6. Step 6: Final answer
    x = 482,419.73

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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.