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Finding the Fourth Proportional to 429,640.93, 644,582.06 and 126,042.25

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Solution

The fourth proportional to 429,640.93, 644,582.06 and 126,042.25 is: 189,098.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,640.93 : 644,582.06 = 126,042.25 : x
  2. Step 2: Convert to fraction form
    429,640.93/644,582.06 = 126,042.25/x
  3. Step 3: Cross multiply
    429,640.93x = 644,582.06 × 126,042.25
  4. Step 4: Simplify right side
    429,640.93x = 81,244,573,152.04
  5. Step 5: Solve for x
    x = 81,244,573,152.04/429,640.93
  6. Step 6: Final answer
    x = 189,098.77

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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.