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Finding the Fourth Proportional to 545,872.80, 818,809.20 and 457,299.30

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Solution

The fourth proportional to 545,872.80, 818,809.20 and 457,299.30 is: 685,948.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,872.80 : 818,809.20 = 457,299.30 : x
  2. Step 2: Convert to fraction form
    545,872.80/818,809.20 = 457,299.30/x
  3. Step 3: Cross multiply
    545,872.80x = 818,809.20 × 457,299.30
  4. Step 4: Simplify right side
    545,872.80x = 374,440,873,993.56
  5. Step 5: Solve for x
    x = 374,440,873,993.56/545,872.80
  6. Step 6: Final answer
    x = 685,948.95

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Similar ratio
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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.