Home / 839,470.38-1,259,200.79-240,431.72

Finding the Fourth Proportional to 839,470.38, 1,259,200.79 and 240,431.72

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Solution

The fourth proportional to 839,470.38, 1,259,200.79 and 240,431.72 is: 360,646.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,470.38 : 1,259,200.79 = 240,431.72 : x
  2. Step 2: Convert to fraction form
    839,470.38/1,259,200.79 = 240,431.72/x
  3. Step 3: Cross multiply
    839,470.38x = 1,259,200.79 × 240,431.72
  4. Step 4: Simplify right side
    839,470.38x = 302,751,808,710.02
  5. Step 5: Solve for x
    x = 302,751,808,710.02/839,470.38
  6. Step 6: Final answer
    x = 360,646.21

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Double scale
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Similar ratio
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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.