Home / 1,287,683.20-1,777,160.28-714,907.90

Finding the Fourth Proportional to 1,287,683.20, 1,777,160.28 and 714,907.90

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Solution

The fourth proportional to 1,287,683.20, 1,777,160.28 and 714,907.90 is: 986,660.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,683.20 : 1,777,160.28 = 714,907.90 : x
  2. Step 2: Convert to fraction form
    1,287,683.20/1,777,160.28 = 714,907.90/x
  3. Step 3: Cross multiply
    1,287,683.20x = 1,777,160.28 × 714,907.90
  4. Step 4: Simplify right side
    1,287,683.20x = 1,270,505,923,738.21
  5. Step 5: Solve for x
    x = 1,270,505,923,738.21/1,287,683.20
  6. Step 6: Final answer
    x = 986,660.32

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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.