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Finding the Fourth Proportional to 980,449.92, 1,352,811 and 572,366.55

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Solution

The fourth proportional to 980,449.92, 1,352,811 and 572,366.55 is: 789,743.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,449.92 : 1,352,811 = 572,366.55 : x
  2. Step 2: Convert to fraction form
    980,449.92/1,352,811 = 572,366.55/x
  3. Step 3: Cross multiply
    980,449.92x = 1,352,811 × 572,366.55
  4. Step 4: Simplify right side
    980,449.92x = 774,303,764,872.05
  5. Step 5: Solve for x
    x = 774,303,764,872.05/980,449.92
  6. Step 6: Final answer
    x = 789,743.31

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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.