Home / 1,289,974.08-1,780,185.54-709,221.76

Finding the Fourth Proportional to 1,289,974.08, 1,780,185.54 and 709,221.76

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Solution

The fourth proportional to 1,289,974.08, 1,780,185.54 and 709,221.76 is: 978,737.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,974.08 : 1,780,185.54 = 709,221.76 : x
  2. Step 2: Convert to fraction form
    1,289,974.08/1,780,185.54 = 709,221.76/x
  3. Step 3: Cross multiply
    1,289,974.08x = 1,780,185.54 × 709,221.76
  4. Step 4: Simplify right side
    1,289,974.08x = 1,262,546,321,805.35
  5. Step 5: Solve for x
    x = 1,262,546,321,805.35/1,289,974.08
  6. Step 6: Final answer
    x = 978,737.74

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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.