Home / 813,939.83-1,123,144.11-451,272.05

Finding the Fourth Proportional to 813,939.83, 1,123,144.11 and 451,272.05

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Solution

The fourth proportional to 813,939.83, 1,123,144.11 and 451,272.05 is: 622,703.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,939.83 : 1,123,144.11 = 451,272.05 : x
  2. Step 2: Convert to fraction form
    813,939.83/1,123,144.11 = 451,272.05/x
  3. Step 3: Cross multiply
    813,939.83x = 1,123,144.11 × 451,272.05
  4. Step 4: Simplify right side
    813,939.83x = 506,843,539,349.41
  5. Step 5: Solve for x
    x = 506,843,539,349.41/813,939.83
  6. Step 6: Final answer
    x = 622,703.94

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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.