Home / 1,761,498.40-2,642,247.60-639,421.60

Finding the Fourth Proportional to 1,761,498.40, 2,642,247.60 and 639,421.60

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Solution

The fourth proportional to 1,761,498.40, 2,642,247.60 and 639,421.60 is: 959,132.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761,498.40 : 2,642,247.60 = 639,421.60 : x
  2. Step 2: Convert to fraction form
    1,761,498.40/2,642,247.60 = 639,421.60/x
  3. Step 3: Cross multiply
    1,761,498.40x = 2,642,247.60 × 639,421.60
  4. Step 4: Simplify right side
    1,761,498.40x = 1,689,510,187,988.16
  5. Step 5: Solve for x
    x = 1,689,510,187,988.16/1,761,498.40
  6. Step 6: Final answer
    x = 959,132.40

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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.