Home / 1,287,040.92-1,776,116.73-714,079.72

Finding the Fourth Proportional to 1,287,040.92, 1,776,116.73 and 714,079.72

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Solution

The fourth proportional to 1,287,040.92, 1,776,116.73 and 714,079.72 is: 985,430.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,040.92 : 1,776,116.73 = 714,079.72 : x
  2. Step 2: Convert to fraction form
    1,287,040.92/1,776,116.73 = 714,079.72/x
  3. Step 3: Cross multiply
    1,287,040.92x = 1,776,116.73 × 714,079.72
  4. Step 4: Simplify right side
    1,287,040.92x = 1,268,288,942,143.66
  5. Step 5: Solve for x
    x = 1,268,288,942,143.66/1,287,040.92
  6. Step 6: Final answer
    x = 985,430.16

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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.