Home / 1,189,265.43-1,641,187.38-645,401.31

Finding the Fourth Proportional to 1,189,265.43, 1,641,187.38 and 645,401.31

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Solution

The fourth proportional to 1,189,265.43, 1,641,187.38 and 645,401.31 is: 890,654.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,265.43 : 1,641,187.38 = 645,401.31 : x
  2. Step 2: Convert to fraction form
    1,189,265.43/1,641,187.38 = 645,401.31/x
  3. Step 3: Cross multiply
    1,189,265.43x = 1,641,187.38 × 645,401.31
  4. Step 4: Simplify right side
    1,189,265.43x = 1,059,224,485,007.47
  5. Step 5: Solve for x
    x = 1,059,224,485,007.47/1,189,265.43
  6. Step 6: Final answer
    x = 890,654.40

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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.