Home / 1,189,610.85-1,641,692.71-645,745.87

Finding the Fourth Proportional to 1,189,610.85, 1,641,692.71 and 645,745.87

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Solution

The fourth proportional to 1,189,610.85, 1,641,692.71 and 645,745.87 is: 891,145.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,610.85 : 1,641,692.71 = 645,745.87 : x
  2. Step 2: Convert to fraction form
    1,189,610.85/1,641,692.71 = 645,745.87/x
  3. Step 3: Cross multiply
    1,189,610.85x = 1,641,692.71 × 645,745.87
  4. Step 4: Simplify right side
    1,189,610.85x = 1,060,116,290,150.91
  5. Step 5: Solve for x
    x = 1,060,116,290,150.91/1,189,610.85
  6. Step 6: Final answer
    x = 891,145.44

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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.