Home / 1,270,987.78-1,753,956-690,205.30

Finding the Fourth Proportional to 1,270,987.78, 1,753,956 and 690,205.30

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Solution

The fourth proportional to 1,270,987.78, 1,753,956 and 690,205.30 is: 952,479.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270,987.78 : 1,753,956 = 690,205.30 : x
  2. Step 2: Convert to fraction form
    1,270,987.78/1,753,956 = 690,205.30/x
  3. Step 3: Cross multiply
    1,270,987.78x = 1,753,956 × 690,205.30
  4. Step 4: Simplify right side
    1,270,987.78x = 1,210,589,727,166.80
  5. Step 5: Solve for x
    x = 1,210,589,727,166.80/1,270,987.78
  6. Step 6: Final answer
    x = 952,479.44

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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.