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Finding the Fourth Proportional to 522,034.80, 784,722.60 and 485,055.60

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Solution

The fourth proportional to 522,034.80, 784,722.60 and 485,055.60 is: 729,135.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,034.80 : 784,722.60 = 485,055.60 : x
  2. Step 2: Convert to fraction form
    522,034.80/784,722.60 = 485,055.60/x
  3. Step 3: Cross multiply
    522,034.80x = 784,722.60 × 485,055.60
  4. Step 4: Simplify right side
    522,034.80x = 380,634,091,576.56
  5. Step 5: Solve for x
    x = 380,634,091,576.56/522,034.80
  6. Step 6: Final answer
    x = 729,135.47

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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.