Home / 1,309,609.39-1,807,247.82-728,822.80

Finding the Fourth Proportional to 1,309,609.39, 1,807,247.82 and 728,822.80

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Solution

The fourth proportional to 1,309,609.39, 1,807,247.82 and 728,822.80 is: 1,005,768.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309,609.39 : 1,807,247.82 = 728,822.80 : x
  2. Step 2: Convert to fraction form
    1,309,609.39/1,807,247.82 = 728,822.80/x
  3. Step 3: Cross multiply
    1,309,609.39x = 1,807,247.82 × 728,822.80
  4. Step 4: Simplify right side
    1,309,609.39x = 1,317,163,416,466.30
  5. Step 5: Solve for x
    x = 1,317,163,416,466.30/1,309,609.39
  6. Step 6: Final answer
    x = 1,005,768.15

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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.