Home / 1,205,640.40-1,805,836.20-731,498.80

Finding the Fourth Proportional to 1,205,640.40, 1,805,836.20 and 731,498.80

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Solution

The fourth proportional to 1,205,640.40, 1,805,836.20 and 731,498.80 is: 1,095,655.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,640.40 : 1,805,836.20 = 731,498.80 : x
  2. Step 2: Convert to fraction form
    1,205,640.40/1,805,836.20 = 731,498.80/x
  3. Step 3: Cross multiply
    1,205,640.40x = 1,805,836.20 × 731,498.80
  4. Step 4: Simplify right side
    1,205,640.40x = 1,320,967,013,296.56
  5. Step 5: Solve for x
    x = 1,320,967,013,296.56/1,205,640.40
  6. Step 6: Final answer
    x = 1,095,655.90

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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.