Home / 1,276,689.88-1,761,910.86-703,728.76

Finding the Fourth Proportional to 1,276,689.88, 1,761,910.86 and 703,728.76

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Solution

The fourth proportional to 1,276,689.88, 1,761,910.86 and 703,728.76 is: 971,189.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,689.88 : 1,761,910.86 = 703,728.76 : x
  2. Step 2: Convert to fraction form
    1,276,689.88/1,761,910.86 = 703,728.76/x
  3. Step 3: Cross multiply
    1,276,689.88x = 1,761,910.86 × 703,728.76
  4. Step 4: Simplify right side
    1,276,689.88x = 1,239,907,344,738.33
  5. Step 5: Solve for x
    x = 1,239,907,344,738.33/1,276,689.88
  6. Step 6: Final answer
    x = 971,189.14

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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.