Home / 990,721.04-1,367,613.60-668,867.12

Finding the Fourth Proportional to 990,721.04, 1,367,613.60 and 668,867.12

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Solution

The fourth proportional to 990,721.04, 1,367,613.60 and 668,867.12 is: 923,319.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,721.04 : 1,367,613.60 = 668,867.12 : x
  2. Step 2: Convert to fraction form
    990,721.04/1,367,613.60 = 668,867.12/x
  3. Step 3: Cross multiply
    990,721.04x = 1,367,613.60 × 668,867.12
  4. Step 4: Simplify right side
    990,721.04x = 914,751,769,904.83
  5. Step 5: Solve for x
    x = 914,751,769,904.83/990,721.04
  6. Step 6: Final answer
    x = 923,319.21

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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.