Home / 1,221,021.15-1,684,889.13-677,147.46

Finding the Fourth Proportional to 1,221,021.15, 1,684,889.13 and 677,147.46

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Solution

The fourth proportional to 1,221,021.15, 1,684,889.13 and 677,147.46 is: 934,396.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,021.15 : 1,684,889.13 = 677,147.46 : x
  2. Step 2: Convert to fraction form
    1,221,021.15/1,684,889.13 = 677,147.46/x
  3. Step 3: Cross multiply
    1,221,021.15x = 1,684,889.13 × 677,147.46
  4. Step 4: Simplify right side
    1,221,021.15x = 1,140,918,394,761.11
  5. Step 5: Solve for x
    x = 1,140,918,394,761.11/1,221,021.15
  6. Step 6: Final answer
    x = 934,396.91

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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.