Home / 3,939,139.20-5,905,428.30-1,666,408.80

Finding the Fourth Proportional to 3,939,139.20, 5,905,428.30 and 1,666,408.80

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Solution

The fourth proportional to 3,939,139.20, 5,905,428.30 and 1,666,408.80 is: 2,498,225.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939,139.20 : 5,905,428.30 = 1,666,408.80 : x
  2. Step 2: Convert to fraction form
    3,939,139.20/5,905,428.30 = 1,666,408.80/x
  3. Step 3: Cross multiply
    3,939,139.20x = 5,905,428.30 × 1,666,408.80
  4. Step 4: Simplify right side
    3,939,139.20x = 9,840,857,686,889.04
  5. Step 5: Solve for x
    x = 9,840,857,686,889.04/3,939,139.20
  6. Step 6: Final answer
    x = 2,498,225.42

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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.