Home / 1,189,502.73-1,641,515.43-645,638.63

Finding the Fourth Proportional to 1,189,502.73, 1,641,515.43 and 645,638.63

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Solution

The fourth proportional to 1,189,502.73, 1,641,515.43 and 645,638.63 is: 890,982.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,502.73 : 1,641,515.43 = 645,638.63 : x
  2. Step 2: Convert to fraction form
    1,189,502.73/1,641,515.43 = 645,638.63/x
  3. Step 3: Cross multiply
    1,189,502.73x = 1,641,515.43 × 645,638.63
  4. Step 4: Simplify right side
    1,189,502.73x = 1,059,825,773,349.06
  5. Step 5: Solve for x
    x = 1,059,825,773,349.06/1,189,502.73
  6. Step 6: Final answer
    x = 890,982.21

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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.