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Finding the Fourth Proportional to 638,366.28, 880,698.24 and 366,335.88

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Solution

The fourth proportional to 638,366.28, 880,698.24 and 366,335.88 is: 505,401.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,366.28 : 880,698.24 = 366,335.88 : x
  2. Step 2: Convert to fraction form
    638,366.28/880,698.24 = 366,335.88/x
  3. Step 3: Cross multiply
    638,366.28x = 880,698.24 × 366,335.88
  4. Step 4: Simplify right side
    638,366.28x = 322,631,364,764.85
  5. Step 5: Solve for x
    x = 322,631,364,764.85/638,366.28
  6. Step 6: Final answer
    x = 505,401.64

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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.