Home / 1,211,692.54-1,672,106.82-660,425.78

Finding the Fourth Proportional to 1,211,692.54, 1,672,106.82 and 660,425.78

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Solution

The fourth proportional to 1,211,692.54, 1,672,106.82 and 660,425.78 is: 911,371.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,692.54 : 1,672,106.82 = 660,425.78 : x
  2. Step 2: Convert to fraction form
    1,211,692.54/1,672,106.82 = 660,425.78/x
  3. Step 3: Cross multiply
    1,211,692.54x = 1,672,106.82 × 660,425.78
  4. Step 4: Simplify right side
    1,211,692.54x = 1,104,302,450,841.82
  5. Step 5: Solve for x
    x = 1,104,302,450,841.82/1,211,692.54
  6. Step 6: Final answer
    x = 911,371.83

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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.