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Finding the Fourth Proportional to 548,456.32, 756,811.20 and 306,713.92

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Solution

The fourth proportional to 548,456.32, 756,811.20 and 306,713.92 is: 423,232.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,456.32 : 756,811.20 = 306,713.92 : x
  2. Step 2: Convert to fraction form
    548,456.32/756,811.20 = 306,713.92/x
  3. Step 3: Cross multiply
    548,456.32x = 756,811.20 × 306,713.92
  4. Step 4: Simplify right side
    548,456.32x = 232,124,529,851.90
  5. Step 5: Solve for x
    x = 232,124,529,851.90/548,456.32
  6. Step 6: Final answer
    x = 423,232.48

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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.