Home / 1,221,042.90-1,685,142.72-677,353.85

Finding the Fourth Proportional to 1,221,042.90, 1,685,142.72 and 677,353.85

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Solution

The fourth proportional to 1,221,042.90, 1,685,142.72 and 677,353.85 is: 934,805.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,042.90 : 1,685,142.72 = 677,353.85 : x
  2. Step 2: Convert to fraction form
    1,221,042.90/1,685,142.72 = 677,353.85/x
  3. Step 3: Cross multiply
    1,221,042.90x = 1,685,142.72 × 677,353.85
  4. Step 4: Simplify right side
    1,221,042.90x = 1,141,437,900,765.76
  5. Step 5: Solve for x
    x = 1,141,437,900,765.76/1,221,042.90
  6. Step 6: Final answer
    x = 934,805.73

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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.