Home / 1,028,720.12-1,419,326.62-665,568.77

Finding the Fourth Proportional to 1,028,720.12, 1,419,326.62 and 665,568.77

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Solution

The fourth proportional to 1,028,720.12, 1,419,326.62 and 665,568.77 is: 918,286.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028,720.12 : 1,419,326.62 = 665,568.77 : x
  2. Step 2: Convert to fraction form
    1,028,720.12/1,419,326.62 = 665,568.77/x
  3. Step 3: Cross multiply
    1,028,720.12x = 1,419,326.62 × 665,568.77
  4. Step 4: Simplify right side
    1,028,720.12x = 944,659,463,941.10
  5. Step 5: Solve for x
    x = 944,659,463,941.10/1,028,720.12
  6. Step 6: Final answer
    x = 918,286.18

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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.