Home / 1,065,921.43-1,471,121.60-678,613.12

Finding the Fourth Proportional to 1,065,921.43, 1,471,121.60 and 678,613.12

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Solution

The fourth proportional to 1,065,921.43, 1,471,121.60 and 678,613.12 is: 936,581.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,065,921.43 : 1,471,121.60 = 678,613.12 : x
  2. Step 2: Convert to fraction form
    1,065,921.43/1,471,121.60 = 678,613.12/x
  3. Step 3: Cross multiply
    1,065,921.43x = 1,471,121.60 × 678,613.12
  4. Step 4: Simplify right side
    1,065,921.43x = 998,322,418,875.39
  5. Step 5: Solve for x
    x = 998,322,418,875.39/1,065,921.43
  6. Step 6: Final answer
    x = 936,581.62

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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.