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Finding the Fourth Proportional to 548,708.40, 823,062.60 and 312,512.40

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Solution

The fourth proportional to 548,708.40, 823,062.60 and 312,512.40 is: 468,768.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,708.40 : 823,062.60 = 312,512.40 : x
  2. Step 2: Convert to fraction form
    548,708.40/823,062.60 = 312,512.40/x
  3. Step 3: Cross multiply
    548,708.40x = 823,062.60 × 312,512.40
  4. Step 4: Simplify right side
    548,708.40x = 257,217,268,476.24
  5. Step 5: Solve for x
    x = 257,217,268,476.24/548,708.40
  6. Step 6: Final answer
    x = 468,768.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.