Home / 1,242,406.38-1,863,556.19-389,458.92

Finding the Fourth Proportional to 1,242,406.38, 1,863,556.19 and 389,458.92

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Solution

The fourth proportional to 1,242,406.38, 1,863,556.19 and 389,458.92 is: 584,171.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,406.38 : 1,863,556.19 = 389,458.92 : x
  2. Step 2: Convert to fraction form
    1,242,406.38/1,863,556.19 = 389,458.92/x
  3. Step 3: Cross multiply
    1,242,406.38x = 1,863,556.19 × 389,458.92
  4. Step 4: Simplify right side
    1,242,406.38x = 725,778,579,169.42
  5. Step 5: Solve for x
    x = 725,778,579,169.42/1,242,406.38
  6. Step 6: Final answer
    x = 584,171.65

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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.