Home / 1,431,711.16-1,975,796.28-787,143.88

Finding the Fourth Proportional to 1,431,711.16, 1,975,796.28 and 787,143.88

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Solution

The fourth proportional to 1,431,711.16, 1,975,796.28 and 787,143.88 is: 1,086,277.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,711.16 : 1,975,796.28 = 787,143.88 : x
  2. Step 2: Convert to fraction form
    1,431,711.16/1,975,796.28 = 787,143.88/x
  3. Step 3: Cross multiply
    1,431,711.16x = 1,975,796.28 × 787,143.88
  4. Step 4: Simplify right side
    1,431,711.16x = 1,555,235,949,928.77
  5. Step 5: Solve for x
    x = 1,555,235,949,928.77/1,431,711.16
  6. Step 6: Final answer
    x = 1,086,277.73

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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.