Home / 438,127.20-655,732.80-317,842.20

Finding the Fourth Proportional to 438,127.20, 655,732.80 and 317,842.20

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Solution

The fourth proportional to 438,127.20, 655,732.80 and 317,842.20 is: 475,705.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,127.20 : 655,732.80 = 317,842.20 : x
  2. Step 2: Convert to fraction form
    438,127.20/655,732.80 = 317,842.20/x
  3. Step 3: Cross multiply
    438,127.20x = 655,732.80 × 317,842.20
  4. Step 4: Simplify right side
    438,127.20x = 208,419,555,764.16
  5. Step 5: Solve for x
    x = 208,419,555,764.16/438,127.20
  6. Step 6: Final answer
    x = 475,705.58

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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.