Home / 567,217.80-782,765.76-312,578.04

Finding the Fourth Proportional to 567,217.80, 782,765.76 and 312,578.04

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Solution

The fourth proportional to 567,217.80, 782,765.76 and 312,578.04 is: 431,360.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,217.80 : 782,765.76 = 312,578.04 : x
  2. Step 2: Convert to fraction form
    567,217.80/782,765.76 = 312,578.04/x
  3. Step 3: Cross multiply
    567,217.80x = 782,765.76 × 312,578.04
  4. Step 4: Simplify right side
    567,217.80x = 244,675,387,039.91
  5. Step 5: Solve for x
    x = 244,675,387,039.91/567,217.80
  6. Step 6: Final answer
    x = 431,360.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.