Home / 764,061.72-1,146,321.54-308,418.36

Finding the Fourth Proportional to 764,061.72, 1,146,321.54 and 308,418.36

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Solution

The fourth proportional to 764,061.72, 1,146,321.54 and 308,418.36 is: 462,719.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,061.72 : 1,146,321.54 = 308,418.36 : x
  2. Step 2: Convert to fraction form
    764,061.72/1,146,321.54 = 308,418.36/x
  3. Step 3: Cross multiply
    764,061.72x = 1,146,321.54 × 308,418.36
  4. Step 4: Simplify right side
    764,061.72x = 353,546,609,399.47
  5. Step 5: Solve for x
    x = 353,546,609,399.47/764,061.72
  6. Step 6: Final answer
    x = 462,719.96

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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.