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Finding the Fourth Proportional to 548,484.12, 756,905.94 and 306,765.72

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Solution

The fourth proportional to 548,484.12, 756,905.94 and 306,765.72 is: 423,335.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,484.12 : 756,905.94 = 306,765.72 : x
  2. Step 2: Convert to fraction form
    548,484.12/756,905.94 = 306,765.72/x
  3. Step 3: Cross multiply
    548,484.12x = 756,905.94 × 306,765.72
  4. Step 4: Simplify right side
    548,484.12x = 232,192,795,656.38
  5. Step 5: Solve for x
    x = 232,192,795,656.38/548,484.12
  6. Step 6: Final answer
    x = 423,335.49

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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.