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Finding the Fourth Proportional to 424,573.60, 636,788.91 and 120,946.44

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Solution

The fourth proportional to 424,573.60, 636,788.91 and 120,946.44 is: 181,399.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,573.60 : 636,788.91 = 120,946.44 : x
  2. Step 2: Convert to fraction form
    424,573.60/636,788.91 = 120,946.44/x
  3. Step 3: Cross multiply
    424,573.60x = 636,788.91 × 120,946.44
  4. Step 4: Simplify right side
    424,573.60x = 77,017,351,695.98
  5. Step 5: Solve for x
    x = 77,017,351,695.98/424,573.60
  6. Step 6: Final answer
    x = 181,399.29

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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.