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Finding the Fourth Proportional to 548,480.75, 756,899.07 and 306,763.13

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Solution

The fourth proportional to 548,480.75, 756,899.07 and 306,763.13 is: 423,330.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,480.75 : 756,899.07 = 306,763.13 : x
  2. Step 2: Convert to fraction form
    548,480.75/756,899.07 = 306,763.13/x
  3. Step 3: Cross multiply
    548,480.75x = 756,899.07 × 306,763.13
  4. Step 4: Simplify right side
    548,480.75x = 232,188,730,274.72
  5. Step 5: Solve for x
    x = 232,188,730,274.72/548,480.75
  6. Step 6: Final answer
    x = 423,330.68

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Double scale
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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.