Home / 1,290,166.20-1,780,676.13-854,588.70

Finding the Fourth Proportional to 1,290,166.20, 1,780,676.13 and 854,588.70

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Solution

The fourth proportional to 1,290,166.20, 1,780,676.13 and 854,588.70 is: 1,179,495.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,166.20 : 1,780,676.13 = 854,588.70 : x
  2. Step 2: Convert to fraction form
    1,290,166.20/1,780,676.13 = 854,588.70/x
  3. Step 3: Cross multiply
    1,290,166.20x = 1,780,676.13 × 854,588.70
  4. Step 4: Simplify right side
    1,290,166.20x = 1,521,745,699,057.73
  5. Step 5: Solve for x
    x = 1,521,745,699,057.73/1,290,166.20
  6. Step 6: Final answer
    x = 1,179,495.87

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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.