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Finding the Fourth Proportional to 548,489.67, 756,954.45 and 306,794.74

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Solution

The fourth proportional to 548,489.67, 756,954.45 and 306,794.74 is: 423,398.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,489.67 : 756,954.45 = 306,794.74 : x
  2. Step 2: Convert to fraction form
    548,489.67/756,954.45 = 306,794.74/x
  3. Step 3: Cross multiply
    548,489.67x = 756,954.45 × 306,794.74
  4. Step 4: Simplify right side
    548,489.67x = 232,229,639,783.27
  5. Step 5: Solve for x
    x = 232,229,639,783.27/548,489.67
  6. Step 6: Final answer
    x = 423,398.38

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Half scale
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Double scale
Find fourth proportional to 548,490.67, 756,955.83 and 306,795.74
Similar ratio
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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.