Home / 1,309,597.39-1,807,231.26-728,810.79

Finding the Fourth Proportional to 1,309,597.39, 1,807,231.26 and 728,810.79

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Solution

The fourth proportional to 1,309,597.39, 1,807,231.26 and 728,810.79 is: 1,005,751.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309,597.39 : 1,807,231.26 = 728,810.79 : x
  2. Step 2: Convert to fraction form
    1,309,597.39/1,807,231.26 = 728,810.79/x
  3. Step 3: Cross multiply
    1,309,597.39x = 1,807,231.26 × 728,810.79
  4. Step 4: Simplify right side
    1,309,597.39x = 1,317,129,642,313.30
  5. Step 5: Solve for x
    x = 1,317,129,642,313.30/1,309,597.39
  6. Step 6: Final answer
    x = 1,005,751.58

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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.