Home / 1,189,321.25-1,641,264.18-645,456.92

Finding the Fourth Proportional to 1,189,321.25, 1,641,264.18 and 645,456.92

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Solution

The fourth proportional to 1,189,321.25, 1,641,264.18 and 645,456.92 is: 890,731.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,321.25 : 1,641,264.18 = 645,456.92 : x
  2. Step 2: Convert to fraction form
    1,189,321.25/1,641,264.18 = 645,456.92/x
  3. Step 3: Cross multiply
    1,189,321.25x = 1,641,264.18 × 645,456.92
  4. Step 4: Simplify right side
    1,189,321.25x = 1,059,365,322,529.13
  5. Step 5: Solve for x
    x = 1,059,365,322,529.13/1,189,321.25
  6. Step 6: Final answer
    x = 890,731.01

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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.