Home / 1,620,745.20-2,431,538.10-861,962.72

Finding the Fourth Proportional to 1,620,745.20, 2,431,538.10 and 861,962.72

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Solution

The fourth proportional to 1,620,745.20, 2,431,538.10 and 861,962.72 is: 1,293,167.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620,745.20 : 2,431,538.10 = 861,962.72 : x
  2. Step 2: Convert to fraction form
    1,620,745.20/2,431,538.10 = 861,962.72/x
  3. Step 3: Cross multiply
    1,620,745.20x = 2,431,538.10 × 861,962.72
  4. Step 4: Simplify right side
    1,620,745.20x = 2,095,895,182,301.94
  5. Step 5: Solve for x
    x = 2,095,895,182,301.94/1,620,745.20
  6. Step 6: Final answer
    x = 1,293,167.60

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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.