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Finding the Fourth Proportional to 545,874.80, 818,812.20 and 404,157.20

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Solution

The fourth proportional to 545,874.80, 818,812.20 and 404,157.20 is: 606,235.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,874.80 : 818,812.20 = 404,157.20 : x
  2. Step 2: Convert to fraction form
    545,874.80/818,812.20 = 404,157.20/x
  3. Step 3: Cross multiply
    545,874.80x = 818,812.20 × 404,157.20
  4. Step 4: Simplify right side
    545,874.80x = 330,928,846,077.84
  5. Step 5: Solve for x
    x = 330,928,846,077.84/545,874.80
  6. Step 6: Final answer
    x = 606,235.80

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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.