Home / 1,188,942.05-1,640,692.18-645,057.02

Finding the Fourth Proportional to 1,188,942.05, 1,640,692.18 and 645,057.02

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Solution

The fourth proportional to 1,188,942.05, 1,640,692.18 and 645,057.02 is: 890,152.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,942.05 : 1,640,692.18 = 645,057.02 : x
  2. Step 2: Convert to fraction form
    1,188,942.05/1,640,692.18 = 645,057.02/x
  3. Step 3: Cross multiply
    1,188,942.05x = 1,640,692.18 × 645,057.02
  4. Step 4: Simplify right side
    1,188,942.05x = 1,058,340,005,861.48
  5. Step 5: Solve for x
    x = 1,058,340,005,861.48/1,188,942.05
  6. Step 6: Final answer
    x = 890,152.73

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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.