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Finding the Fourth Proportional to 522,065.80, 784,769.10 and 485,086.60

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Solution

The fourth proportional to 522,065.80, 784,769.10 and 485,086.60 is: 729,181.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,065.80 : 784,769.10 = 485,086.60 : x
  2. Step 2: Convert to fraction form
    522,065.80/784,769.10 = 485,086.60/x
  3. Step 3: Cross multiply
    522,065.80x = 784,769.10 × 485,086.60
  4. Step 4: Simplify right side
    522,065.80x = 380,680,974,504.06
  5. Step 5: Solve for x
    x = 380,680,974,504.06/522,065.80
  6. Step 6: Final answer
    x = 729,181.98

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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.