Home / 990,742.03-1,367,642.60-668,888.12

Finding the Fourth Proportional to 990,742.03, 1,367,642.60 and 668,888.12

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Solution

The fourth proportional to 990,742.03, 1,367,642.60 and 668,888.12 is: 923,348.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,742.03 : 1,367,642.60 = 668,888.12 : x
  2. Step 2: Convert to fraction form
    990,742.03/1,367,642.60 = 668,888.12/x
  3. Step 3: Cross multiply
    990,742.03x = 1,367,642.60 × 668,888.12
  4. Step 4: Simplify right side
    990,742.03x = 914,799,887,545.91
  5. Step 5: Solve for x
    x = 914,799,887,545.91/990,742.03
  6. Step 6: Final answer
    x = 923,348.22

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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.