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Finding the Fourth Proportional to 545,919.20, 818,878.80 and 545,919.20

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Solution

The fourth proportional to 545,919.20, 818,878.80 and 545,919.20 is: 818,878.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,919.20 : 818,878.80 = 545,919.20 : x
  2. Step 2: Convert to fraction form
    545,919.20/818,878.80 = 545,919.20/x
  3. Step 3: Cross multiply
    545,919.20x = 818,878.80 × 545,919.20
  4. Step 4: Simplify right side
    545,919.20x = 447,041,659,392.96
  5. Step 5: Solve for x
    x = 447,041,659,392.96/545,919.20
  6. Step 6: Final answer
    x = 818,878.80

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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.