Home / 815,447.19-1,217,679.18-665,983.98

Finding the Fourth Proportional to 815,447.19, 1,217,679.18 and 665,983.98

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Solution

The fourth proportional to 815,447.19, 1,217,679.18 and 665,983.98 is: 994,490.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,447.19 : 1,217,679.18 = 665,983.98 : x
  2. Step 2: Convert to fraction form
    815,447.19/1,217,679.18 = 665,983.98/x
  3. Step 3: Cross multiply
    815,447.19x = 1,217,679.18 × 665,983.98
  4. Step 4: Simplify right side
    815,447.19x = 810,954,826,659.54
  5. Step 5: Solve for x
    x = 810,954,826,659.54/815,447.19
  6. Step 6: Final answer
    x = 994,490.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.