Home / 762,790.20-1,143,839.70-289,318.20

Finding the Fourth Proportional to 762,790.20, 1,143,839.70 and 289,318.20

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Solution

The fourth proportional to 762,790.20, 1,143,839.70 and 289,318.20 is: 433,846.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,790.20 : 1,143,839.70 = 289,318.20 : x
  2. Step 2: Convert to fraction form
    762,790.20/1,143,839.70 = 289,318.20/x
  3. Step 3: Cross multiply
    762,790.20x = 1,143,839.70 × 289,318.20
  4. Step 4: Simplify right side
    762,790.20x = 330,933,643,092.54
  5. Step 5: Solve for x
    x = 330,933,643,092.54/762,790.20
  6. Step 6: Final answer
    x = 433,846.22

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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.