Home / 1,761,499.40-2,642,249.10-639,422.60

Finding the Fourth Proportional to 1,761,499.40, 2,642,249.10 and 639,422.60

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Solution

The fourth proportional to 1,761,499.40, 2,642,249.10 and 639,422.60 is: 959,133.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761,499.40 : 2,642,249.10 = 639,422.60 : x
  2. Step 2: Convert to fraction form
    1,761,499.40/2,642,249.10 = 639,422.60/x
  3. Step 3: Cross multiply
    1,761,499.40x = 2,642,249.10 × 639,422.60
  4. Step 4: Simplify right side
    1,761,499.40x = 1,689,513,789,369.66
  5. Step 5: Solve for x
    x = 1,689,513,789,369.66/1,761,499.40
  6. Step 6: Final answer
    x = 959,133.90

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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.