Home / 509,739.60-764,585.10-172,747.20

Finding the Fourth Proportional to 509,739.60, 764,585.10 and 172,747.20

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Solution

The fourth proportional to 509,739.60, 764,585.10 and 172,747.20 is: 259,112.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,739.60 : 764,585.10 = 172,747.20 : x
  2. Step 2: Convert to fraction form
    509,739.60/764,585.10 = 172,747.20/x
  3. Step 3: Cross multiply
    509,739.60x = 764,585.10 × 172,747.20
  4. Step 4: Simplify right side
    509,739.60x = 132,079,935,186.72
  5. Step 5: Solve for x
    x = 132,079,935,186.72/509,739.60
  6. Step 6: Final answer
    x = 259,112.56

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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.