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Finding the Fourth Proportional to 491,660.70, 736,972.65 and 280,844.70

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Solution

The fourth proportional to 491,660.70, 736,972.65 and 280,844.70 is: 420,970.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,660.70 : 736,972.65 = 280,844.70 : x
  2. Step 2: Convert to fraction form
    491,660.70/736,972.65 = 280,844.70/x
  3. Step 3: Cross multiply
    491,660.70x = 736,972.65 × 280,844.70
  4. Step 4: Simplify right side
    491,660.70x = 206,974,862,797.46
  5. Step 5: Solve for x
    x = 206,974,862,797.46/491,660.70
  6. Step 6: Final answer
    x = 420,970.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.