Home / 1,146,183.40-1,581,639.78-687,399.40

Finding the Fourth Proportional to 1,146,183.40, 1,581,639.78 and 687,399.40

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Solution

The fourth proportional to 1,146,183.40, 1,581,639.78 and 687,399.40 is: 948,555.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,146,183.40 : 1,581,639.78 = 687,399.40 : x
  2. Step 2: Convert to fraction form
    1,146,183.40/1,581,639.78 = 687,399.40/x
  3. Step 3: Cross multiply
    1,146,183.40x = 1,581,639.78 × 687,399.40
  4. Step 4: Simplify right side
    1,146,183.40x = 1,087,218,235,788.13
  5. Step 5: Solve for x
    x = 1,087,218,235,788.13/1,146,183.40
  6. Step 6: Final answer
    x = 948,555.21

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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.