Home / 1,203,969.21-1,806,139.91-405,188.11

Finding the Fourth Proportional to 1,203,969.21, 1,806,139.91 and 405,188.11

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Solution

The fourth proportional to 1,203,969.21, 1,806,139.91 and 405,188.11 is: 607,844.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203,969.21 : 1,806,139.91 = 405,188.11 : x
  2. Step 2: Convert to fraction form
    1,203,969.21/1,806,139.91 = 405,188.11/x
  3. Step 3: Cross multiply
    1,203,969.21x = 1,806,139.91 × 405,188.11
  4. Step 4: Simplify right side
    1,203,969.21x = 731,826,416,528.47
  5. Step 5: Solve for x
    x = 731,826,416,528.47/1,203,969.21
  6. Step 6: Final answer
    x = 607,844.79

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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.