Home / 1,089,538.88-1,502,518.79-721,431.95

Finding the Fourth Proportional to 1,089,538.88, 1,502,518.79 and 721,431.95

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Solution

The fourth proportional to 1,089,538.88, 1,502,518.79 and 721,431.95 is: 994,884.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089,538.88 : 1,502,518.79 = 721,431.95 : x
  2. Step 2: Convert to fraction form
    1,089,538.88/1,502,518.79 = 721,431.95/x
  3. Step 3: Cross multiply
    1,089,538.88x = 1,502,518.79 × 721,431.95
  4. Step 4: Simplify right side
    1,089,538.88x = 1,083,965,049,461.59
  5. Step 5: Solve for x
    x = 1,083,965,049,461.59/1,089,538.88
  6. Step 6: Final answer
    x = 994,884.23

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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.