Home / 1,287,190.88-1,776,296.16-714,218.72

Finding the Fourth Proportional to 1,287,190.88, 1,776,296.16 and 714,218.72

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Solution

The fourth proportional to 1,287,190.88, 1,776,296.16 and 714,218.72 is: 985,606.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,190.88 : 1,776,296.16 = 714,218.72 : x
  2. Step 2: Convert to fraction form
    1,287,190.88/1,776,296.16 = 714,218.72/x
  3. Step 3: Cross multiply
    1,287,190.88x = 1,776,296.16 × 714,218.72
  4. Step 4: Simplify right side
    1,287,190.88x = 1,268,663,969,736.12
  5. Step 5: Solve for x
    x = 1,268,663,969,736.12/1,287,190.88
  6. Step 6: Final answer
    x = 985,606.71

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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.