Home / 1,189,195.28-1,641,081.30-645,317.36

Finding the Fourth Proportional to 1,189,195.28, 1,641,081.30 and 645,317.36

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Solution

The fourth proportional to 1,189,195.28, 1,641,081.30 and 645,317.36 is: 890,533.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,195.28 : 1,641,081.30 = 645,317.36 : x
  2. Step 2: Convert to fraction form
    1,189,195.28/1,641,081.30 = 645,317.36/x
  3. Step 3: Cross multiply
    1,189,195.28x = 1,641,081.30 × 645,317.36
  4. Step 4: Simplify right side
    1,189,195.28x = 1,059,018,252,061.37
  5. Step 5: Solve for x
    x = 1,059,018,252,061.37/1,189,195.28
  6. Step 6: Final answer
    x = 890,533.51

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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.