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Finding the Fourth Proportional to 548,473.12, 756,890.76 and 306,754.72

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Solution

The fourth proportional to 548,473.12, 756,890.76 and 306,754.72 is: 423,320.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,473.12 : 756,890.76 = 306,754.72 : x
  2. Step 2: Convert to fraction form
    548,473.12/756,890.76 = 306,754.72/x
  3. Step 3: Cross multiply
    548,473.12x = 756,890.76 × 306,754.72
  4. Step 4: Simplify right side
    548,473.12x = 232,179,813,154.39
  5. Step 5: Solve for x
    x = 232,179,813,154.39/548,473.12
  6. Step 6: Final answer
    x = 423,320.31

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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.