Home / 990,640.28-1,367,084.40-560,921.09

Finding the Fourth Proportional to 990,640.28, 1,367,084.40 and 560,921.09

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Solution

The fourth proportional to 990,640.28, 1,367,084.40 and 560,921.09 is: 774,071.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,640.28 : 1,367,084.40 = 560,921.09 : x
  2. Step 2: Convert to fraction form
    990,640.28/1,367,084.40 = 560,921.09/x
  3. Step 3: Cross multiply
    990,640.28x = 1,367,084.40 × 560,921.09
  4. Step 4: Simplify right side
    990,640.28x = 766,826,471,770.00
  5. Step 5: Solve for x
    x = 766,826,471,770.00/990,640.28
  6. Step 6: Final answer
    x = 774,071.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.