Home / 809,121.42-1,213,306.70-472,259.03

Finding the Fourth Proportional to 809,121.42, 1,213,306.70 and 472,259.03

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Solution

The fourth proportional to 809,121.42, 1,213,306.70 and 472,259.03 is: 708,169.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,121.42 : 1,213,306.70 = 472,259.03 : x
  2. Step 2: Convert to fraction form
    809,121.42/1,213,306.70 = 472,259.03/x
  3. Step 3: Cross multiply
    809,121.42x = 1,213,306.70 × 472,259.03
  4. Step 4: Simplify right side
    809,121.42x = 572,995,036,806.67
  5. Step 5: Solve for x
    x = 572,995,036,806.67/809,121.42
  6. Step 6: Final answer
    x = 708,169.41

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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.