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Finding the Fourth Proportional to 391,062.70, 584,844.45 and 328,077.10

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Solution

The fourth proportional to 391,062.70, 584,844.45 and 328,077.10 is: 490,647.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,062.70 : 584,844.45 = 328,077.10 : x
  2. Step 2: Convert to fraction form
    391,062.70/584,844.45 = 328,077.10/x
  3. Step 3: Cross multiply
    391,062.70x = 584,844.45 × 328,077.10
  4. Step 4: Simplify right side
    391,062.70x = 191,874,071,107.10
  5. Step 5: Solve for x
    x = 191,874,071,107.10/391,062.70
  6. Step 6: Final answer
    x = 490,647.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.