Home / 686,314.13-1,029,471.21-187,678.13

Finding the Fourth Proportional to 686,314.13, 1,029,471.21 and 187,678.13

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Solution

The fourth proportional to 686,314.13, 1,029,471.21 and 187,678.13 is: 281,517.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,314.13 : 1,029,471.21 = 187,678.13 : x
  2. Step 2: Convert to fraction form
    686,314.13/1,029,471.21 = 187,678.13/x
  3. Step 3: Cross multiply
    686,314.13x = 1,029,471.21 × 187,678.13
  4. Step 4: Simplify right side
    686,314.13x = 193,209,226,434.28
  5. Step 5: Solve for x
    x = 193,209,226,434.28/686,314.13
  6. Step 6: Final answer
    x = 281,517.19

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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.