Home / 804,939.40-1,207,409.10-720,958.60

Finding the Fourth Proportional to 804,939.40, 1,207,409.10 and 720,958.60

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Solution

The fourth proportional to 804,939.40, 1,207,409.10 and 720,958.60 is: 1,081,437.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,939.40 : 1,207,409.10 = 720,958.60 : x
  2. Step 2: Convert to fraction form
    804,939.40/1,207,409.10 = 720,958.60/x
  3. Step 3: Cross multiply
    804,939.40x = 1,207,409.10 × 720,958.60
  4. Step 4: Simplify right side
    804,939.40x = 870,491,974,363.26
  5. Step 5: Solve for x
    x = 870,491,974,363.26/804,939.40
  6. Step 6: Final answer
    x = 1,081,437.90

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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.