Home / 1,643,452.11-2,267,921.57-918,305.78

Finding the Fourth Proportional to 1,643,452.11, 2,267,921.57 and 918,305.78

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Solution

The fourth proportional to 1,643,452.11, 2,267,921.57 and 918,305.78 is: 1,267,238.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,643,452.11 : 2,267,921.57 = 918,305.78 : x
  2. Step 2: Convert to fraction form
    1,643,452.11/2,267,921.57 = 918,305.78/x
  3. Step 3: Cross multiply
    1,643,452.11x = 2,267,921.57 × 918,305.78
  4. Step 4: Simplify right side
    1,643,452.11x = 2,082,645,470,386.54
  5. Step 5: Solve for x
    x = 2,082,645,470,386.54/1,643,452.11
  6. Step 6: Final answer
    x = 1,267,238.31

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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.