Home / 1,389,387.62-2,083,789.80-391,882.34

Finding the Fourth Proportional to 1,389,387.62, 2,083,789.80 and 391,882.34

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Solution

The fourth proportional to 1,389,387.62, 2,083,789.80 and 391,882.34 is: 587,741.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,387.62 : 2,083,789.80 = 391,882.34 : x
  2. Step 2: Convert to fraction form
    1,389,387.62/2,083,789.80 = 391,882.34/x
  3. Step 3: Cross multiply
    1,389,387.62x = 2,083,789.80 × 391,882.34
  4. Step 4: Simplify right side
    1,389,387.62x = 816,600,412,473.18
  5. Step 5: Solve for x
    x = 816,600,412,473.18/1,389,387.62
  6. Step 6: Final answer
    x = 587,741.25

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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.