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Finding the Fourth Proportional to 661,380.84, 992,512.44 and 424,893.24

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Solution

The fourth proportional to 661,380.84, 992,512.44 and 424,893.24 is: 637,623.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,380.84 : 992,512.44 = 424,893.24 : x
  2. Step 2: Convert to fraction form
    661,380.84/992,512.44 = 424,893.24/x
  3. Step 3: Cross multiply
    661,380.84x = 992,512.44 × 424,893.24
  4. Step 4: Simplify right side
    661,380.84x = 421,711,826,371.91
  5. Step 5: Solve for x
    x = 421,711,826,371.91/661,380.84
  6. Step 6: Final answer
    x = 637,623.29

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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.