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Finding the Fourth Proportional to 545,270.80, 817,906.20 and 377,309.20

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Solution

The fourth proportional to 545,270.80, 817,906.20 and 377,309.20 is: 565,963.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,270.80 : 817,906.20 = 377,309.20 : x
  2. Step 2: Convert to fraction form
    545,270.80/817,906.20 = 377,309.20/x
  3. Step 3: Cross multiply
    545,270.80x = 817,906.20 × 377,309.20
  4. Step 4: Simplify right side
    545,270.80x = 308,603,533,997.04
  5. Step 5: Solve for x
    x = 308,603,533,997.04/545,270.80
  6. Step 6: Final answer
    x = 565,963.80

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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.