Home / 669,086.36-922,919.22-396,961.64

Finding the Fourth Proportional to 669,086.36, 922,919.22 and 396,961.64

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Solution

The fourth proportional to 669,086.36, 922,919.22 and 396,961.64 is: 547,557.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,086.36 : 922,919.22 = 396,961.64 : x
  2. Step 2: Convert to fraction form
    669,086.36/922,919.22 = 396,961.64/x
  3. Step 3: Cross multiply
    669,086.36x = 922,919.22 × 396,961.64
  4. Step 4: Simplify right side
    669,086.36x = 366,363,527,158.72
  5. Step 5: Solve for x
    x = 366,363,527,158.72/669,086.36
  6. Step 6: Final answer
    x = 547,557.91

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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.