Home / 1,189,639.43-1,641,704.51-645,775.59

Finding the Fourth Proportional to 1,189,639.43, 1,641,704.51 and 645,775.59

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Solution

The fourth proportional to 1,189,639.43, 1,641,704.51 and 645,775.59 is: 891,171.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,639.43 : 1,641,704.51 = 645,775.59 : x
  2. Step 2: Convert to fraction form
    1,189,639.43/1,641,704.51 = 645,775.59/x
  3. Step 3: Cross multiply
    1,189,639.43x = 1,641,704.51 × 645,775.59
  4. Step 4: Simplify right side
    1,189,639.43x = 1,060,172,695,322.03
  5. Step 5: Solve for x
    x = 1,060,172,695,322.03/1,189,639.43
  6. Step 6: Final answer
    x = 891,171.45

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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.