Home / 1,242,022.70-1,863,034.05-816,869.90

Finding the Fourth Proportional to 1,242,022.70, 1,863,034.05 and 816,869.90

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Solution

The fourth proportional to 1,242,022.70, 1,863,034.05 and 816,869.90 is: 1,225,304.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,022.70 : 1,863,034.05 = 816,869.90 : x
  2. Step 2: Convert to fraction form
    1,242,022.70/1,863,034.05 = 816,869.90/x
  3. Step 3: Cross multiply
    1,242,022.70x = 1,863,034.05 × 816,869.90
  4. Step 4: Simplify right side
    1,242,022.70x = 1,521,856,438,120.10
  5. Step 5: Solve for x
    x = 1,521,856,438,120.10/1,242,022.70
  6. Step 6: Final answer
    x = 1,225,304.85

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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.