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Finding the Fourth Proportional to 548,289.82, 756,800.85 and 318,901.06

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Solution

The fourth proportional to 548,289.82, 756,800.85 and 318,901.06 is: 440,177.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,289.82 : 756,800.85 = 318,901.06 : x
  2. Step 2: Convert to fraction form
    548,289.82/756,800.85 = 318,901.06/x
  3. Step 3: Cross multiply
    548,289.82x = 756,800.85 × 318,901.06
  4. Step 4: Simplify right side
    548,289.82x = 241,344,593,273.90
  5. Step 5: Solve for x
    x = 241,344,593,273.90/548,289.82
  6. Step 6: Final answer
    x = 440,177.05

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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.