Home / 1,438,896.72-1,985,713.58-818,667.70

Finding the Fourth Proportional to 1,438,896.72, 1,985,713.58 and 818,667.70

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Solution

The fourth proportional to 1,438,896.72, 1,985,713.58 and 818,667.70 is: 1,129,781.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,896.72 : 1,985,713.58 = 818,667.70 : x
  2. Step 2: Convert to fraction form
    1,438,896.72/1,985,713.58 = 818,667.70/x
  3. Step 3: Cross multiply
    1,438,896.72x = 1,985,713.58 × 818,667.70
  4. Step 4: Simplify right side
    1,438,896.72x = 1,625,639,572,064.57
  5. Step 5: Solve for x
    x = 1,625,639,572,064.57/1,438,896.72
  6. Step 6: Final answer
    x = 1,129,781.97

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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.