Home / 1,225,910.34-1,691,811.36-1,021,619.25

Finding the Fourth Proportional to 1,225,910.34, 1,691,811.36 and 1,021,619.25

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Solution

The fourth proportional to 1,225,910.34, 1,691,811.36 and 1,021,619.25 is: 1,409,880.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,910.34 : 1,691,811.36 = 1,021,619.25 : x
  2. Step 2: Convert to fraction form
    1,225,910.34/1,691,811.36 = 1,021,619.25/x
  3. Step 3: Cross multiply
    1,225,910.34x = 1,691,811.36 × 1,021,619.25
  4. Step 4: Simplify right side
    1,225,910.34x = 1,728,387,052,744.68
  5. Step 5: Solve for x
    x = 1,728,387,052,744.68/1,225,910.34
  6. Step 6: Final answer
    x = 1,409,880.48

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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.