Home / 990,741.03-1,367,641.22-668,887.12

Finding the Fourth Proportional to 990,741.03, 1,367,641.22 and 668,887.12

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Solution

The fourth proportional to 990,741.03, 1,367,641.22 and 668,887.12 is: 923,346.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,741.03 : 1,367,641.22 = 668,887.12 : x
  2. Step 2: Convert to fraction form
    990,741.03/1,367,641.22 = 668,887.12/x
  3. Step 3: Cross multiply
    990,741.03x = 1,367,641.22 × 668,887.12
  4. Step 4: Simplify right side
    990,741.03x = 914,797,596,839.09
  5. Step 5: Solve for x
    x = 914,797,596,839.09/990,741.03
  6. Step 6: Final answer
    x = 923,346.84

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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.