Home / 1,121,745.31-1,682,839.77-411,779.50

Finding the Fourth Proportional to 1,121,745.31, 1,682,839.77 and 411,779.50

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Solution

The fourth proportional to 1,121,745.31, 1,682,839.77 and 411,779.50 is: 617,750.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,745.31 : 1,682,839.77 = 411,779.50 : x
  2. Step 2: Convert to fraction form
    1,121,745.31/1,682,839.77 = 411,779.50/x
  3. Step 3: Cross multiply
    1,121,745.31x = 1,682,839.77 × 411,779.50
  4. Step 4: Simplify right side
    1,121,745.31x = 692,958,919,070.72
  5. Step 5: Solve for x
    x = 692,958,919,070.72/1,121,745.31
  6. Step 6: Final answer
    x = 617,750.67

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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.