Home / 839,689.90-1,259,221.38-270,928.16

Finding the Fourth Proportional to 839,689.90, 1,259,221.38 and 270,928.16

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Solution

The fourth proportional to 839,689.90, 1,259,221.38 and 270,928.16 is: 406,291.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,689.90 : 1,259,221.38 = 270,928.16 : x
  2. Step 2: Convert to fraction form
    839,689.90/1,259,221.38 = 270,928.16/x
  3. Step 3: Cross multiply
    839,689.90x = 1,259,221.38 × 270,928.16
  4. Step 4: Simplify right side
    839,689.90x = 341,158,531,516.06
  5. Step 5: Solve for x
    x = 341,158,531,516.06/839,689.90
  6. Step 6: Final answer
    x = 406,291.10

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.