Home / 1,214,072.40-1,821,108.60-1,131,128.40

Finding the Fourth Proportional to 1,214,072.40, 1,821,108.60 and 1,131,128.40

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Solution

The fourth proportional to 1,214,072.40, 1,821,108.60 and 1,131,128.40 is: 1,696,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,072.40 : 1,821,108.60 = 1,131,128.40 : x
  2. Step 2: Convert to fraction form
    1,214,072.40/1,821,108.60 = 1,131,128.40/x
  3. Step 3: Cross multiply
    1,214,072.40x = 1,821,108.60 × 1,131,128.40
  4. Step 4: Simplify right side
    1,214,072.40x = 2,059,907,656,944.24
  5. Step 5: Solve for x
    x = 2,059,907,656,944.24/1,214,072.40
  6. Step 6: Final answer
    x = 1,696,692.60

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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.