Home / 813,651.87-1,122,905.88-451,189.38

Finding the Fourth Proportional to 813,651.87, 1,122,905.88 and 451,189.38

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Solution

The fourth proportional to 813,651.87, 1,122,905.88 and 451,189.38 is: 622,678.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,651.87 : 1,122,905.88 = 451,189.38 : x
  2. Step 2: Convert to fraction form
    813,651.87/1,122,905.88 = 451,189.38/x
  3. Step 3: Cross multiply
    813,651.87x = 1,122,905.88 × 451,189.38
  4. Step 4: Simplify right side
    813,651.87x = 506,643,207,795.55
  5. Step 5: Solve for x
    x = 506,643,207,795.55/813,651.87
  6. Step 6: Final answer
    x = 622,678.11

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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.