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Finding the Fourth Proportional to 548,449.32, 756,801.54 and 306,706.92

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Solution

The fourth proportional to 548,449.32, 756,801.54 and 306,706.92 is: 423,222.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,449.32 : 756,801.54 = 306,706.92 : x
  2. Step 2: Convert to fraction form
    548,449.32/756,801.54 = 306,706.92/x
  3. Step 3: Cross multiply
    548,449.32x = 756,801.54 × 306,706.92
  4. Step 4: Simplify right side
    548,449.32x = 232,116,269,384.66
  5. Step 5: Solve for x
    x = 232,116,269,384.66/548,449.32
  6. Step 6: Final answer
    x = 423,222.82

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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.