Home / 7,182,805.89-9,912,481.46-3,919,830.80

Finding the Fourth Proportional to 7,182,805.89, 9,912,481.46 and 3,919,830.80

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Solution

The fourth proportional to 7,182,805.89, 9,912,481.46 and 3,919,830.80 is: 5,409,480.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,182,805.89 : 9,912,481.46 = 3,919,830.80 : x
  2. Step 2: Convert to fraction form
    7,182,805.89/9,912,481.46 = 3,919,830.80/x
  3. Step 3: Cross multiply
    7,182,805.89x = 9,912,481.46 × 3,919,830.80
  4. Step 4: Simplify right side
    7,182,805.89x = 38,855,250,091,574.14
  5. Step 5: Solve for x
    x = 38,855,250,091,574.14/7,182,805.89
  6. Step 6: Final answer
    x = 5,409,480.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.