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Finding the Fourth Proportional to 641,049.62, 884,589.01 and 354,563.55

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Solution

The fourth proportional to 641,049.62, 884,589.01 and 354,563.55 is: 489,264.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,049.62 : 884,589.01 = 354,563.55 : x
  2. Step 2: Convert to fraction form
    641,049.62/884,589.01 = 354,563.55/x
  3. Step 3: Cross multiply
    641,049.62x = 884,589.01 × 354,563.55
  4. Step 4: Simplify right side
    641,049.62x = 313,643,020,119.79
  5. Step 5: Solve for x
    x = 313,643,020,119.79/641,049.62
  6. Step 6: Final answer
    x = 489,264.81

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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.