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Finding the Fourth Proportional to 553,767.32, 764,198.90 and 299,118.51

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Solution

The fourth proportional to 553,767.32, 764,198.90 and 299,118.51 is: 412,783.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,767.32 : 764,198.90 = 299,118.51 : x
  2. Step 2: Convert to fraction form
    553,767.32/764,198.90 = 299,118.51/x
  3. Step 3: Cross multiply
    553,767.32x = 764,198.90 × 299,118.51
  4. Step 4: Simplify right side
    553,767.32x = 228,586,034,816.05
  5. Step 5: Solve for x
    x = 228,586,034,816.05/553,767.32
  6. Step 6: Final answer
    x = 412,783.54

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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.