Home / 642,259.11-886,371.60-355,805.85

Finding the Fourth Proportional to 642,259.11, 886,371.60 and 355,805.85

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Solution

The fourth proportional to 642,259.11, 886,371.60 and 355,805.85 is: 491,042.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,259.11 : 886,371.60 = 355,805.85 : x
  2. Step 2: Convert to fraction form
    642,259.11/886,371.60 = 355,805.85/x
  3. Step 3: Cross multiply
    642,259.11x = 886,371.60 × 355,805.85
  4. Step 4: Simplify right side
    642,259.11x = 315,376,200,553.86
  5. Step 5: Solve for x
    x = 315,376,200,553.86/642,259.11
  6. Step 6: Final answer
    x = 491,042.00

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1.5x scale

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.