Home / 1,215,958.65-1,678,029.62-664,675.19

Finding the Fourth Proportional to 1,215,958.65, 1,678,029.62 and 664,675.19

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Solution

The fourth proportional to 1,215,958.65, 1,678,029.62 and 664,675.19 is: 917,255.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,958.65 : 1,678,029.62 = 664,675.19 : x
  2. Step 2: Convert to fraction form
    1,215,958.65/1,678,029.62 = 664,675.19/x
  3. Step 3: Cross multiply
    1,215,958.65x = 1,678,029.62 × 664,675.19
  4. Step 4: Simplify right side
    1,215,958.65x = 1,115,344,644,785.60
  5. Step 5: Solve for x
    x = 1,115,344,644,785.60/1,215,958.65
  6. Step 6: Final answer
    x = 917,255.41

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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.