Home / 1,242,128.82-1,863,193.08-400,680.57

Finding the Fourth Proportional to 1,242,128.82, 1,863,193.08 and 400,680.57

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Solution

The fourth proportional to 1,242,128.82, 1,863,193.08 and 400,680.57 is: 601,020.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,128.82 : 1,863,193.08 = 400,680.57 : x
  2. Step 2: Convert to fraction form
    1,242,128.82/1,863,193.08 = 400,680.57/x
  3. Step 3: Cross multiply
    1,242,128.82x = 1,863,193.08 × 400,680.57
  4. Step 4: Simplify right side
    1,242,128.82x = 746,545,273,803.98
  5. Step 5: Solve for x
    x = 746,545,273,803.98/1,242,128.82
  6. Step 6: Final answer
    x = 601,020.81

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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.