Home / 815,250.69-1,217,386.13-665,787.47

Finding the Fourth Proportional to 815,250.69, 1,217,386.13 and 665,787.47

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Solution

The fourth proportional to 815,250.69, 1,217,386.13 and 665,787.47 is: 994,197.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,250.69 : 1,217,386.13 = 665,787.47 : x
  2. Step 2: Convert to fraction form
    815,250.69/1,217,386.13 = 665,787.47/x
  3. Step 3: Cross multiply
    815,250.69x = 1,217,386.13 × 665,787.47
  4. Step 4: Simplify right side
    815,250.69x = 810,520,422,089.92
  5. Step 5: Solve for x
    x = 810,520,422,089.92/815,250.69
  6. Step 6: Final answer
    x = 994,197.78

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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.