Home / 1,122,942.18-1,685,286.76-783,779.49

Finding the Fourth Proportional to 1,122,942.18, 1,685,286.76 and 783,779.49

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Solution

The fourth proportional to 1,122,942.18, 1,685,286.76 and 783,779.49 is: 1,176,278.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,942.18 : 1,685,286.76 = 783,779.49 : x
  2. Step 2: Convert to fraction form
    1,122,942.18/1,685,286.76 = 783,779.49/x
  3. Step 3: Cross multiply
    1,122,942.18x = 1,685,286.76 × 783,779.49
  4. Step 4: Simplify right side
    1,122,942.18x = 1,320,893,196,766.69
  5. Step 5: Solve for x
    x = 1,320,893,196,766.69/1,122,942.18
  6. Step 6: Final answer
    x = 1,176,278.90

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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.