Home / 1,431,718.56-1,975,785.12-787,143.24

Finding the Fourth Proportional to 1,431,718.56, 1,975,785.12 and 787,143.24

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Solution

The fourth proportional to 1,431,718.56, 1,975,785.12 and 787,143.24 is: 1,086,265.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,718.56 : 1,975,785.12 = 787,143.24 : x
  2. Step 2: Convert to fraction form
    1,431,718.56/1,975,785.12 = 787,143.24/x
  3. Step 3: Cross multiply
    1,431,718.56x = 1,975,785.12 × 787,143.24
  4. Step 4: Simplify right side
    1,431,718.56x = 1,555,225,900,900.59
  5. Step 5: Solve for x
    x = 1,555,225,900,900.59/1,431,718.56
  6. Step 6: Final answer
    x = 1,086,265.10

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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.