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Finding the Fourth Proportional to 636,591.78, 955,308.33 and 299,728.76

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Solution

The fourth proportional to 636,591.78, 955,308.33 and 299,728.76 is: 449,791.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,591.78 : 955,308.33 = 299,728.76 : x
  2. Step 2: Convert to fraction form
    636,591.78/955,308.33 = 299,728.76/x
  3. Step 3: Cross multiply
    636,591.78x = 955,308.33 × 299,728.76
  4. Step 4: Simplify right side
    636,591.78x = 286,333,376,392.03
  5. Step 5: Solve for x
    x = 286,333,376,392.03/636,591.78
  6. Step 6: Final answer
    x = 449,791.19

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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.