Home / 1,212,999.10-1,820,810.85-764,226.70

Finding the Fourth Proportional to 1,212,999.10, 1,820,810.85 and 764,226.70

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Solution

The fourth proportional to 1,212,999.10, 1,820,810.85 and 764,226.70 is: 1,147,166.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,999.10 : 1,820,810.85 = 764,226.70 : x
  2. Step 2: Convert to fraction form
    1,212,999.10/1,820,810.85 = 764,226.70/x
  3. Step 3: Cross multiply
    1,212,999.10x = 1,820,810.85 × 764,226.70
  4. Step 4: Simplify right side
    1,212,999.10x = 1,391,512,267,219.70
  5. Step 5: Solve for x
    x = 1,391,512,267,219.70/1,212,999.10
  6. Step 6: Final answer
    x = 1,147,166.78

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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.