Home / 725,105.84-1,087,814.40-304,139.12

Finding the Fourth Proportional to 725,105.84, 1,087,814.40 and 304,139.12

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Solution

The fourth proportional to 725,105.84, 1,087,814.40 and 304,139.12 is: 456,273.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,105.84 : 1,087,814.40 = 304,139.12 : x
  2. Step 2: Convert to fraction form
    725,105.84/1,087,814.40 = 304,139.12/x
  3. Step 3: Cross multiply
    725,105.84x = 1,087,814.40 × 304,139.12
  4. Step 4: Simplify right side
    725,105.84x = 330,846,914,339.33
  5. Step 5: Solve for x
    x = 330,846,914,339.33/725,105.84
  6. Step 6: Final answer
    x = 456,273.96

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Double scale
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1.5x scale

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.