Home / 664,669.40-995,600.10-440,137.40

Finding the Fourth Proportional to 664,669.40, 995,600.10 and 440,137.40

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Solution

The fourth proportional to 664,669.40, 995,600.10 and 440,137.40 is: 659,276.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,669.40 : 995,600.10 = 440,137.40 : x
  2. Step 2: Convert to fraction form
    664,669.40/995,600.10 = 440,137.40/x
  3. Step 3: Cross multiply
    664,669.40x = 995,600.10 × 440,137.40
  4. Step 4: Simplify right side
    664,669.40x = 438,200,839,453.74
  5. Step 5: Solve for x
    x = 438,200,839,453.74/664,669.40
  6. Step 6: Final answer
    x = 659,276.39

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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.