Home / 765,854.12-1,149,490.44-387,041.42

Finding the Fourth Proportional to 765,854.12, 1,149,490.44 and 387,041.42

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Solution

The fourth proportional to 765,854.12, 1,149,490.44 and 387,041.42 is: 580,920.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,854.12 : 1,149,490.44 = 387,041.42 : x
  2. Step 2: Convert to fraction form
    765,854.12/1,149,490.44 = 387,041.42/x
  3. Step 3: Cross multiply
    765,854.12x = 1,149,490.44 × 387,041.42
  4. Step 4: Simplify right side
    765,854.12x = 444,900,412,174.03
  5. Step 5: Solve for x
    x = 444,900,412,174.03/765,854.12
  6. Step 6: Final answer
    x = 580,920.57

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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.