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Finding the Fourth Proportional to 548,728.32, 757,274.52 and 306,996.48

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Solution

The fourth proportional to 548,728.32, 757,274.52 and 306,996.48 is: 423,671.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,728.32 : 757,274.52 = 306,996.48 : x
  2. Step 2: Convert to fraction form
    548,728.32/757,274.52 = 306,996.48/x
  3. Step 3: Cross multiply
    548,728.32x = 757,274.52 × 306,996.48
  4. Step 4: Simplify right side
    548,728.32x = 232,480,612,033.69
  5. Step 5: Solve for x
    x = 232,480,612,033.69/548,728.32
  6. Step 6: Final answer
    x = 423,671.61

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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.