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Finding the Fourth Proportional to 641,763.70, 885,726.56 and 369,779.47

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Solution

The fourth proportional to 641,763.70, 885,726.56 and 369,779.47 is: 510,349.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,763.70 : 885,726.56 = 369,779.47 : x
  2. Step 2: Convert to fraction form
    641,763.70/885,726.56 = 369,779.47/x
  3. Step 3: Cross multiply
    641,763.70x = 885,726.56 × 369,779.47
  4. Step 4: Simplify right side
    641,763.70x = 327,523,497,921.72
  5. Step 5: Solve for x
    x = 327,523,497,921.72/641,763.70
  6. Step 6: Final answer
    x = 510,349.06

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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.