Home / 1,263,381.12-1,743,466.72-690,421.28

Finding the Fourth Proportional to 1,263,381.12, 1,743,466.72 and 690,421.28

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Solution

The fourth proportional to 1,263,381.12, 1,743,466.72 and 690,421.28 is: 952,781.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263,381.12 : 1,743,466.72 = 690,421.28 : x
  2. Step 2: Convert to fraction form
    1,263,381.12/1,743,466.72 = 690,421.28/x
  3. Step 3: Cross multiply
    1,263,381.12x = 1,743,466.72 × 690,421.28
  4. Step 4: Simplify right side
    1,263,381.12x = 1,203,726,524,459.80
  5. Step 5: Solve for x
    x = 1,203,726,524,459.80/1,263,381.12
  6. Step 6: Final answer
    x = 952,781.79

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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.