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Finding the Fourth Proportional to 492,789.55, 680,195.01 and 288,884.60

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Solution

The fourth proportional to 492,789.55, 680,195.01 and 288,884.60 is: 398,746.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,789.55 : 680,195.01 = 288,884.60 : x
  2. Step 2: Convert to fraction form
    492,789.55/680,195.01 = 288,884.60/x
  3. Step 3: Cross multiply
    492,789.55x = 680,195.01 × 288,884.60
  4. Step 4: Simplify right side
    492,789.55x = 196,497,863,392.72
  5. Step 5: Solve for x
    x = 196,497,863,392.72/492,789.55
  6. Step 6: Final answer
    x = 398,746.01

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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.