Home / 639,417.20-882,395.82-352,937.39

Finding the Fourth Proportional to 639,417.20, 882,395.82 and 352,937.39

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Solution

The fourth proportional to 639,417.20, 882,395.82 and 352,937.39 is: 487,053.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,417.20 : 882,395.82 = 352,937.39 : x
  2. Step 2: Convert to fraction form
    639,417.20/882,395.82 = 352,937.39/x
  3. Step 3: Cross multiply
    639,417.20x = 882,395.82 × 352,937.39
  4. Step 4: Simplify right side
    639,417.20x = 311,430,473,245.73
  5. Step 5: Solve for x
    x = 311,430,473,245.73/639,417.20
  6. Step 6: Final answer
    x = 487,053.64

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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.