Home / 815,288.26-1,125,130.17-471,112.78

Finding the Fourth Proportional to 815,288.26, 1,125,130.17 and 471,112.78

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Solution

The fourth proportional to 815,288.26, 1,125,130.17 and 471,112.78 is: 650,154.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,288.26 : 1,125,130.17 = 471,112.78 : x
  2. Step 2: Convert to fraction form
    815,288.26/1,125,130.17 = 471,112.78/x
  3. Step 3: Cross multiply
    815,288.26x = 1,125,130.17 × 471,112.78
  4. Step 4: Simplify right side
    815,288.26x = 530,063,202,250.57
  5. Step 5: Solve for x
    x = 530,063,202,250.57/815,288.26
  6. Step 6: Final answer
    x = 650,154.34

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1.5x scale

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.