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Finding the Fourth Proportional to 545,659.20, 818,634.60 and 486,901.80

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Solution

The fourth proportional to 545,659.20, 818,634.60 and 486,901.80 is: 730,482.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,659.20 : 818,634.60 = 486,901.80 : x
  2. Step 2: Convert to fraction form
    545,659.20/818,634.60 = 486,901.80/x
  3. Step 3: Cross multiply
    545,659.20x = 818,634.60 × 486,901.80
  4. Step 4: Simplify right side
    545,659.20x = 398,594,660,282.28
  5. Step 5: Solve for x
    x = 398,594,660,282.28/545,659.20
  6. Step 6: Final answer
    x = 730,482.80

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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.