Home / 1,321,101.89-1,823,110.33-717,489.89

Finding the Fourth Proportional to 1,321,101.89, 1,823,110.33 and 717,489.89

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Solution

The fourth proportional to 1,321,101.89, 1,823,110.33 and 717,489.89 is: 990,130.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,101.89 : 1,823,110.33 = 717,489.89 : x
  2. Step 2: Convert to fraction form
    1,321,101.89/1,823,110.33 = 717,489.89/x
  3. Step 3: Cross multiply
    1,321,101.89x = 1,823,110.33 × 717,489.89
  4. Step 4: Simplify right side
    1,321,101.89x = 1,308,063,230,129.56
  5. Step 5: Solve for x
    x = 1,308,063,230,129.56/1,321,101.89
  6. Step 6: Final answer
    x = 990,130.47

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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.