Home / 399,724.22-599,897.25-278,996.87

Finding the Fourth Proportional to 399,724.22, 599,897.25 and 278,996.87

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Solution

The fourth proportional to 399,724.22, 599,897.25 and 278,996.87 is: 418,712.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,724.22 : 599,897.25 = 278,996.87 : x
  2. Step 2: Convert to fraction form
    399,724.22/599,897.25 = 278,996.87/x
  3. Step 3: Cross multiply
    399,724.22x = 599,897.25 × 278,996.87
  4. Step 4: Simplify right side
    399,724.22x = 167,369,456,571.35
  5. Step 5: Solve for x
    x = 167,369,456,571.35/399,724.22
  6. Step 6: Final answer
    x = 418,712.33

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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.