Home / 1,287,839.14-1,777,129.06-714,834.22

Finding the Fourth Proportional to 1,287,839.14, 1,777,129.06 and 714,834.22

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Solution

The fourth proportional to 1,287,839.14, 1,777,129.06 and 714,834.22 is: 986,421.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,839.14 : 1,777,129.06 = 714,834.22 : x
  2. Step 2: Convert to fraction form
    1,287,839.14/1,777,129.06 = 714,834.22/x
  3. Step 3: Cross multiply
    1,287,839.14x = 1,777,129.06 × 714,834.22
  4. Step 4: Simplify right side
    1,287,839.14x = 1,270,352,665,444.43
  5. Step 5: Solve for x
    x = 1,270,352,665,444.43/1,287,839.14
  6. Step 6: Final answer
    x = 986,421.85

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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.