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Finding the Fourth Proportional to 1,438,229.33, 1,984,868.51 and 826,595.49

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Solution

The fourth proportional to 1,438,229.33, 1,984,868.51 and 826,595.49 is: 1,140,766.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,229.33 : 1,984,868.51 = 826,595.49 : x
  2. Step 2: Convert to fraction form
    1,438,229.33/1,984,868.51 = 826,595.49/x
  3. Step 3: Cross multiply
    1,438,229.33x = 1,984,868.51 × 826,595.49
  4. Step 4: Simplify right side
    1,438,229.33x = 1,640,683,358,609.02
  5. Step 5: Solve for x
    x = 1,640,683,358,609.02/1,438,229.33
  6. Step 6: Final answer
    x = 1,140,766.17

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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.