Home / 758,648.57-1,138,142.33-285,338.03

Finding the Fourth Proportional to 758,648.57, 1,138,142.33 and 285,338.03

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Solution

The fourth proportional to 758,648.57, 1,138,142.33 and 285,338.03 is: 428,070.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,648.57 : 1,138,142.33 = 285,338.03 : x
  2. Step 2: Convert to fraction form
    758,648.57/1,138,142.33 = 285,338.03/x
  3. Step 3: Cross multiply
    758,648.57x = 1,138,142.33 × 285,338.03
  4. Step 4: Simplify right side
    758,648.57x = 324,755,288,875.12
  5. Step 5: Solve for x
    x = 324,755,288,875.12/758,648.57
  6. Step 6: Final answer
    x = 428,070.78

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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.