Home / 764,811.80-1,147,217.70-484,645.40

Finding the Fourth Proportional to 764,811.80, 1,147,217.70 and 484,645.40

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Solution

The fourth proportional to 764,811.80, 1,147,217.70 and 484,645.40 is: 726,968.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,811.80 : 1,147,217.70 = 484,645.40 : x
  2. Step 2: Convert to fraction form
    764,811.80/1,147,217.70 = 484,645.40/x
  3. Step 3: Cross multiply
    764,811.80x = 1,147,217.70 × 484,645.40
  4. Step 4: Simplify right side
    764,811.80x = 555,993,781,103.58
  5. Step 5: Solve for x
    x = 555,993,781,103.58/764,811.80
  6. Step 6: Final answer
    x = 726,968.10

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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.