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Finding the Fourth Proportional to 424,006.60, 636,009.90 and 299,590.60

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Solution

The fourth proportional to 424,006.60, 636,009.90 and 299,590.60 is: 449,385.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,006.60 : 636,009.90 = 299,590.60 : x
  2. Step 2: Convert to fraction form
    424,006.60/636,009.90 = 299,590.60/x
  3. Step 3: Cross multiply
    424,006.60x = 636,009.90 × 299,590.60
  4. Step 4: Simplify right side
    424,006.60x = 190,542,587,546.94
  5. Step 5: Solve for x
    x = 190,542,587,546.94/424,006.60
  6. Step 6: Final answer
    x = 449,385.90

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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.