Home / 5,147,795.72-7,721,658.88-1,309,585.20

Finding the Fourth Proportional to 5,147,795.72, 7,721,658.88 and 1,309,585.20

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Solution

The fourth proportional to 5,147,795.72, 7,721,658.88 and 1,309,585.20 is: 1,964,368.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147,795.72 : 7,721,658.88 = 1,309,585.20 : x
  2. Step 2: Convert to fraction form
    5,147,795.72/7,721,658.88 = 1,309,585.20/x
  3. Step 3: Cross multiply
    5,147,795.72x = 7,721,658.88 × 1,309,585.20
  4. Step 4: Simplify right side
    5,147,795.72x = 10,112,170,188,696.58
  5. Step 5: Solve for x
    x = 10,112,170,188,696.58/5,147,795.72
  6. Step 6: Final answer
    x = 1,964,368.97

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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.