Home / 621,061.59-930,927.97-321,240.31

Finding the Fourth Proportional to 621,061.59, 930,927.97 and 321,240.31

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Solution

The fourth proportional to 621,061.59, 930,927.97 and 321,240.31 is: 481,516.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,061.59 : 930,927.97 = 321,240.31 : x
  2. Step 2: Convert to fraction form
    621,061.59/930,927.97 = 321,240.31/x
  3. Step 3: Cross multiply
    621,061.59x = 930,927.97 × 321,240.31
  4. Step 4: Simplify right side
    621,061.59x = 299,051,589,670.47
  5. Step 5: Solve for x
    x = 299,051,589,670.47/621,061.59
  6. Step 6: Final answer
    x = 481,516.80

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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.