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Finding the Fourth Proportional to 424,578.60, 636,874.40 and 109,028.52

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Solution

The fourth proportional to 424,578.60, 636,874.40 and 109,028.52 is: 163,544.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,578.60 : 636,874.40 = 109,028.52 : x
  2. Step 2: Convert to fraction form
    424,578.60/636,874.40 = 109,028.52/x
  3. Step 3: Cross multiply
    424,578.60x = 636,874.40 × 109,028.52
  4. Step 4: Simplify right side
    424,578.60x = 69,437,473,257.89
  5. Step 5: Solve for x
    x = 69,437,473,257.89/424,578.60
  6. Step 6: Final answer
    x = 163,544.45

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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.