Home / 801,072.40-1,201,219.80-445,709.20

Finding the Fourth Proportional to 801,072.40, 1,201,219.80 and 445,709.20

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Solution

The fourth proportional to 801,072.40, 1,201,219.80 and 445,709.20 is: 668,347.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,072.40 : 1,201,219.80 = 445,709.20 : x
  2. Step 2: Convert to fraction form
    801,072.40/1,201,219.80 = 445,709.20/x
  3. Step 3: Cross multiply
    801,072.40x = 1,201,219.80 × 445,709.20
  4. Step 4: Simplify right side
    801,072.40x = 535,394,716,082.16
  5. Step 5: Solve for x
    x = 535,394,716,082.16/801,072.40
  6. Step 6: Final answer
    x = 668,347.48

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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.