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Finding the Fourth Proportional to 614,772.90, 921,175.20 and 404,164.80

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Solution

The fourth proportional to 614,772.90, 921,175.20 and 404,164.80 is: 605,600.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,772.90 : 921,175.20 = 404,164.80 : x
  2. Step 2: Convert to fraction form
    614,772.90/921,175.20 = 404,164.80/x
  3. Step 3: Cross multiply
    614,772.90x = 921,175.20 × 404,164.80
  4. Step 4: Simplify right side
    614,772.90x = 372,306,590,472.96
  5. Step 5: Solve for x
    x = 372,306,590,472.96/614,772.90
  6. Step 6: Final answer
    x = 605,600.20

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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.