Home / 684,882.27-945,054.72-394,588.80

Finding the Fourth Proportional to 684,882.27, 945,054.72 and 394,588.80

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Solution

The fourth proportional to 684,882.27, 945,054.72 and 394,588.80 is: 544,484.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,882.27 : 945,054.72 = 394,588.80 : x
  2. Step 2: Convert to fraction form
    684,882.27/945,054.72 = 394,588.80/x
  3. Step 3: Cross multiply
    684,882.27x = 945,054.72 × 394,588.80
  4. Step 4: Simplify right side
    684,882.27x = 372,908,007,899.14
  5. Step 5: Solve for x
    x = 372,908,007,899.14/684,882.27
  6. Step 6: Final answer
    x = 544,484.83

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Double scale
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1.5x scale

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.