Home / 1,128,550.29-1,557,399.41-645,126.23

Finding the Fourth Proportional to 1,128,550.29, 1,557,399.41 and 645,126.23

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Solution

The fourth proportional to 1,128,550.29, 1,557,399.41 and 645,126.23 is: 890,274.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,550.29 : 1,557,399.41 = 645,126.23 : x
  2. Step 2: Convert to fraction form
    1,128,550.29/1,557,399.41 = 645,126.23/x
  3. Step 3: Cross multiply
    1,128,550.29x = 1,557,399.41 × 645,126.23
  4. Step 4: Simplify right side
    1,128,550.29x = 1,004,719,198,964.90
  5. Step 5: Solve for x
    x = 1,004,719,198,964.90/1,128,550.29
  6. Step 6: Final answer
    x = 890,274.19

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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.