Home / 1,391,838.49-2,087,245.67-480,789.12

Finding the Fourth Proportional to 1,391,838.49, 2,087,245.67 and 480,789.12

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Solution

The fourth proportional to 1,391,838.49, 2,087,245.67 and 480,789.12 is: 721,006.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,838.49 : 2,087,245.67 = 480,789.12 : x
  2. Step 2: Convert to fraction form
    1,391,838.49/2,087,245.67 = 480,789.12/x
  3. Step 3: Cross multiply
    1,391,838.49x = 2,087,245.67 × 480,789.12
  4. Step 4: Simplify right side
    1,391,838.49x = 1,003,525,002,585.58
  5. Step 5: Solve for x
    x = 1,003,525,002,585.58/1,391,838.49
  6. Step 6: Final answer
    x = 721,006.79

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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.