Home / 639,817.39-882,542.46-486,519.49

Finding the Fourth Proportional to 639,817.39, 882,542.46 and 486,519.49

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Solution

The fourth proportional to 639,817.39, 882,542.46 and 486,519.49 is: 671,088.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,817.39 : 882,542.46 = 486,519.49 : x
  2. Step 2: Convert to fraction form
    639,817.39/882,542.46 = 486,519.49/x
  3. Step 3: Cross multiply
    639,817.39x = 882,542.46 × 486,519.49
  4. Step 4: Simplify right side
    639,817.39x = 429,374,107,542.55
  5. Step 5: Solve for x
    x = 429,374,107,542.55/639,817.39
  6. Step 6: Final answer
    x = 671,088.52

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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.