Home / 725,021.40-1,087,920.90-304,339.80

Finding the Fourth Proportional to 725,021.40, 1,087,920.90 and 304,339.80

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Solution

The fourth proportional to 725,021.40, 1,087,920.90 and 304,339.80 is: 456,672.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,021.40 : 1,087,920.90 = 304,339.80 : x
  2. Step 2: Convert to fraction form
    725,021.40/1,087,920.90 = 304,339.80/x
  3. Step 3: Cross multiply
    725,021.40x = 1,087,920.90 × 304,339.80
  4. Step 4: Simplify right side
    725,021.40x = 331,097,629,121.82
  5. Step 5: Solve for x
    x = 331,097,629,121.82/725,021.40
  6. Step 6: Final answer
    x = 456,672.91

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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.