Home / 1,287,833.13-1,777,120.80-714,828.20

Finding the Fourth Proportional to 1,287,833.13, 1,777,120.80 and 714,828.20

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Solution

The fourth proportional to 1,287,833.13, 1,777,120.80 and 714,828.20 is: 986,413.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,833.13 : 1,777,120.80 = 714,828.20 : x
  2. Step 2: Convert to fraction form
    1,287,833.13/1,777,120.80 = 714,828.20/x
  3. Step 3: Cross multiply
    1,287,833.13x = 1,777,120.80 × 714,828.20
  4. Step 4: Simplify right side
    1,287,833.13x = 1,270,336,053,760.96
  5. Step 5: Solve for x
    x = 1,270,336,053,760.96/1,287,833.13
  6. Step 6: Final answer
    x = 986,413.55

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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.