Home / 819,937.20-1,230,136.20-399,226.80

Finding the Fourth Proportional to 819,937.20, 1,230,136.20 and 399,226.80

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Solution

The fourth proportional to 819,937.20, 1,230,136.20 and 399,226.80 is: 598,952.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,937.20 : 1,230,136.20 = 399,226.80 : x
  2. Step 2: Convert to fraction form
    819,937.20/1,230,136.20 = 399,226.80/x
  3. Step 3: Cross multiply
    819,937.20x = 1,230,136.20 × 399,226.80
  4. Step 4: Simplify right side
    819,937.20x = 491,103,338,690.16
  5. Step 5: Solve for x
    x = 491,103,338,690.16/819,937.20
  6. Step 6: Final answer
    x = 598,952.38

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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.