Home / 1,272,208.80-1,755,661.70-691,431.92

Finding the Fourth Proportional to 1,272,208.80, 1,755,661.70 and 691,431.92

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Solution

The fourth proportional to 1,272,208.80, 1,755,661.70 and 691,431.92 is: 954,183.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,208.80 : 1,755,661.70 = 691,431.92 : x
  2. Step 2: Convert to fraction form
    1,272,208.80/1,755,661.70 = 691,431.92/x
  3. Step 3: Cross multiply
    1,272,208.80x = 1,755,661.70 × 691,431.92
  4. Step 4: Simplify right side
    1,272,208.80x = 1,213,920,540,101.46
  5. Step 5: Solve for x
    x = 1,213,920,540,101.46/1,272,208.80
  6. Step 6: Final answer
    x = 954,183.42

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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.