Home / 1,189,474.72-1,641,438.48-645,584.80

Finding the Fourth Proportional to 1,189,474.72, 1,641,438.48 and 645,584.80

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Solution

The fourth proportional to 1,189,474.72, 1,641,438.48 and 645,584.80 is: 890,887.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,474.72 : 1,641,438.48 = 645,584.80 : x
  2. Step 2: Convert to fraction form
    1,189,474.72/1,641,438.48 = 645,584.80/x
  3. Step 3: Cross multiply
    1,189,474.72x = 1,641,438.48 × 645,584.80
  4. Step 4: Simplify right side
    1,189,474.72x = 1,059,687,732,823.10
  5. Step 5: Solve for x
    x = 1,059,687,732,823.10/1,189,474.72
  6. Step 6: Final answer
    x = 890,887.14

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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.