Home / 813,974.50-1,123,284.90-451,453.78

Finding the Fourth Proportional to 813,974.50, 1,123,284.90 and 451,453.78

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Solution

The fourth proportional to 813,974.50, 1,123,284.90 and 451,453.78 is: 623,006.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,974.50 : 1,123,284.90 = 451,453.78 : x
  2. Step 2: Convert to fraction form
    813,974.50/1,123,284.90 = 451,453.78/x
  3. Step 3: Cross multiply
    813,974.50x = 1,123,284.90 × 451,453.78
  4. Step 4: Simplify right side
    813,974.50x = 507,111,214,121.92
  5. Step 5: Solve for x
    x = 507,111,214,121.92/813,974.50
  6. Step 6: Final answer
    x = 623,006.27

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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.