Home / 1,217,275.38-1,679,889.42-673,401.78

Finding the Fourth Proportional to 1,217,275.38, 1,679,889.42 and 673,401.78

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Solution

The fourth proportional to 1,217,275.38, 1,679,889.42 and 673,401.78 is: 929,321.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,275.38 : 1,679,889.42 = 673,401.78 : x
  2. Step 2: Convert to fraction form
    1,217,275.38/1,679,889.42 = 673,401.78/x
  3. Step 3: Cross multiply
    1,217,275.38x = 1,679,889.42 × 673,401.78
  4. Step 4: Simplify right side
    1,217,275.38x = 1,131,240,525,631.17
  5. Step 5: Solve for x
    x = 1,131,240,525,631.17/1,217,275.38
  6. Step 6: Final answer
    x = 929,321.78

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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.