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Finding the Fourth Proportional to 545,257.80, 817,886.70 and 377,296.20

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Solution

The fourth proportional to 545,257.80, 817,886.70 and 377,296.20 is: 565,944.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,257.80 : 817,886.70 = 377,296.20 : x
  2. Step 2: Convert to fraction form
    545,257.80/817,886.70 = 377,296.20/x
  3. Step 3: Cross multiply
    545,257.80x = 817,886.70 × 377,296.20
  4. Step 4: Simplify right side
    545,257.80x = 308,585,543,940.54
  5. Step 5: Solve for x
    x = 308,585,543,940.54/545,257.80
  6. Step 6: Final answer
    x = 565,944.30

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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.