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Finding the Fourth Proportional to 545,217.80, 817,826.70 and 377,256.20

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Solution

The fourth proportional to 545,217.80, 817,826.70 and 377,256.20 is: 565,884.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,217.80 : 817,826.70 = 377,256.20 : x
  2. Step 2: Convert to fraction form
    545,217.80/817,826.70 = 377,256.20/x
  3. Step 3: Cross multiply
    545,217.80x = 817,826.70 × 377,256.20
  4. Step 4: Simplify right side
    545,217.80x = 308,530,193,100.54
  5. Step 5: Solve for x
    x = 308,530,193,100.54/545,217.80
  6. Step 6: Final answer
    x = 565,884.30

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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.