Home / 1,189,672.92-1,641,760.44-645,813

Finding the Fourth Proportional to 1,189,672.92, 1,641,760.44 and 645,813

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Solution

The fourth proportional to 1,189,672.92, 1,641,760.44 and 645,813 is: 891,228.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,672.92 : 1,641,760.44 = 645,813 : x
  2. Step 2: Convert to fraction form
    1,189,672.92/1,641,760.44 = 645,813/x
  3. Step 3: Cross multiply
    1,189,672.92x = 1,641,760.44 × 645,813
  4. Step 4: Simplify right side
    1,189,672.92x = 1,060,270,235,037.72
  5. Step 5: Solve for x
    x = 1,060,270,235,037.72/1,189,672.92
  6. Step 6: Final answer
    x = 891,228.35

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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.