Home / 817,621.51-1,226,338.68-218,629.38

Finding the Fourth Proportional to 817,621.51, 1,226,338.68 and 218,629.38

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Solution

The fourth proportional to 817,621.51, 1,226,338.68 and 218,629.38 is: 327,919.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,621.51 : 1,226,338.68 = 218,629.38 : x
  2. Step 2: Convert to fraction form
    817,621.51/1,226,338.68 = 218,629.38/x
  3. Step 3: Cross multiply
    817,621.51x = 1,226,338.68 × 218,629.38
  4. Step 4: Simplify right side
    817,621.51x = 268,113,665,278.42
  5. Step 5: Solve for x
    x = 268,113,665,278.42/817,621.51
  6. Step 6: Final answer
    x = 327,919.05

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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.