Home / 758,642.28-1,138,007.25-285,331.74

Finding the Fourth Proportional to 758,642.28, 1,138,007.25 and 285,331.74

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Solution

The fourth proportional to 758,642.28, 1,138,007.25 and 285,331.74 is: 428,014.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,642.28 : 1,138,007.25 = 285,331.74 : x
  2. Step 2: Convert to fraction form
    758,642.28/1,138,007.25 = 285,331.74/x
  3. Step 3: Cross multiply
    758,642.28x = 1,138,007.25 × 285,331.74
  4. Step 4: Simplify right side
    758,642.28x = 324,709,588,775.12
  5. Step 5: Solve for x
    x = 324,709,588,775.12/758,642.28
  6. Step 6: Final answer
    x = 428,014.09

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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.