Home / 1,189,502.74-1,641,515.44-645,638.64

Finding the Fourth Proportional to 1,189,502.74, 1,641,515.44 and 645,638.64

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Solution

The fourth proportional to 1,189,502.74, 1,641,515.44 and 645,638.64 is: 890,982.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,502.74 : 1,641,515.44 = 645,638.64 : x
  2. Step 2: Convert to fraction form
    1,189,502.74/1,641,515.44 = 645,638.64/x
  3. Step 3: Cross multiply
    1,189,502.74x = 1,641,515.44 × 645,638.64
  4. Step 4: Simplify right side
    1,189,502.74x = 1,059,825,796,220.60
  5. Step 5: Solve for x
    x = 1,059,825,796,220.60/1,189,502.74
  6. Step 6: Final answer
    x = 890,982.22

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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.