Home / 639,464.40-959,196.69-324,011.52

Finding the Fourth Proportional to 639,464.40, 959,196.69 and 324,011.52

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Solution

The fourth proportional to 639,464.40, 959,196.69 and 324,011.52 is: 486,017.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,464.40 : 959,196.69 = 324,011.52 : x
  2. Step 2: Convert to fraction form
    639,464.40/959,196.69 = 324,011.52/x
  3. Step 3: Cross multiply
    639,464.40x = 959,196.69 × 324,011.52
  4. Step 4: Simplify right side
    639,464.40x = 310,790,777,505.87
  5. Step 5: Solve for x
    x = 310,790,777,505.87/639,464.40
  6. Step 6: Final answer
    x = 486,017.33

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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.