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Finding the Fourth Proportional to 485,591.64, 669,878.28 and 324,486.24

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Solution

The fourth proportional to 485,591.64, 669,878.28 and 324,486.24 is: 447,631.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,591.64 : 669,878.28 = 324,486.24 : x
  2. Step 2: Convert to fraction form
    485,591.64/669,878.28 = 324,486.24/x
  3. Step 3: Cross multiply
    485,591.64x = 669,878.28 × 324,486.24
  4. Step 4: Simplify right side
    485,591.64x = 217,366,284,334.87
  5. Step 5: Solve for x
    x = 217,366,284,334.87/485,591.64
  6. Step 6: Final answer
    x = 447,631.85

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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.