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Finding the Fourth Proportional to 548,472.12, 756,889.38 and 306,753.72

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Solution

The fourth proportional to 548,472.12, 756,889.38 and 306,753.72 is: 423,318.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,472.12 : 756,889.38 = 306,753.72 : x
  2. Step 2: Convert to fraction form
    548,472.12/756,889.38 = 306,753.72/x
  3. Step 3: Cross multiply
    548,472.12x = 756,889.38 × 306,753.72
  4. Step 4: Simplify right side
    548,472.12x = 232,178,632,943.49
  5. Step 5: Solve for x
    x = 232,178,632,943.49/548,472.12
  6. Step 6: Final answer
    x = 423,318.93

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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.