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Finding the Fourth Proportional to 641,846.62, 885,761.85 and 351,470.38

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Solution

The fourth proportional to 641,846.62, 885,761.85 and 351,470.38 is: 485,036.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,846.62 : 885,761.85 = 351,470.38 : x
  2. Step 2: Convert to fraction form
    641,846.62/885,761.85 = 351,470.38/x
  3. Step 3: Cross multiply
    641,846.62x = 885,761.85 × 351,470.38
  4. Step 4: Simplify right side
    641,846.62x = 311,319,054,009.00
  5. Step 5: Solve for x
    x = 311,319,054,009.00/641,846.62
  6. Step 6: Final answer
    x = 485,036.52

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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.