Home / 764,933.80-1,147,400.70-427,628.20

Finding the Fourth Proportional to 764,933.80, 1,147,400.70 and 427,628.20

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Solution

The fourth proportional to 764,933.80, 1,147,400.70 and 427,628.20 is: 641,442.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,933.80 : 1,147,400.70 = 427,628.20 : x
  2. Step 2: Convert to fraction form
    764,933.80/1,147,400.70 = 427,628.20/x
  3. Step 3: Cross multiply
    764,933.80x = 1,147,400.70 × 427,628.20
  4. Step 4: Simplify right side
    764,933.80x = 490,660,896,019.74
  5. Step 5: Solve for x
    x = 490,660,896,019.74/764,933.80
  6. Step 6: Final answer
    x = 641,442.30

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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.