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Finding the Fourth Proportional to 548,154.76, 756,464.13 and 306,454.81

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Solution

The fourth proportional to 548,154.76, 756,464.13 and 306,454.81 is: 422,913.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,154.76 : 756,464.13 = 306,454.81 : x
  2. Step 2: Convert to fraction form
    548,154.76/756,464.13 = 306,454.81/x
  3. Step 3: Cross multiply
    548,154.76x = 756,464.13 × 306,454.81
  4. Step 4: Simplify right side
    548,154.76x = 231,822,071,230.97
  5. Step 5: Solve for x
    x = 231,822,071,230.97/548,154.76
  6. Step 6: Final answer
    x = 422,913.54

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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.