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Finding the Fourth Proportional to 614,775.90, 921,179.70 and 404,167.80

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Solution

The fourth proportional to 614,775.90, 921,179.70 and 404,167.80 is: 605,604.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,775.90 : 921,179.70 = 404,167.80 : x
  2. Step 2: Convert to fraction form
    614,775.90/921,179.70 = 404,167.80/x
  3. Step 3: Cross multiply
    614,775.90x = 921,179.70 × 404,167.80
  4. Step 4: Simplify right side
    614,775.90x = 372,311,172,753.66
  5. Step 5: Solve for x
    x = 372,311,172,753.66/614,775.90
  6. Step 6: Final answer
    x = 605,604.70

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1.5x scale

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.