Home / 639,478.36-882,480.72-352,998.16

Finding the Fourth Proportional to 639,478.36, 882,480.72 and 352,998.16

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Solution

The fourth proportional to 639,478.36, 882,480.72 and 352,998.16 is: 487,137.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,478.36 : 882,480.72 = 352,998.16 : x
  2. Step 2: Convert to fraction form
    639,478.36/882,480.72 = 352,998.16/x
  3. Step 3: Cross multiply
    639,478.36x = 882,480.72 × 352,998.16
  4. Step 4: Simplify right side
    639,478.36x = 311,514,070,395.48
  5. Step 5: Solve for x
    x = 311,514,070,395.48/639,478.36
  6. Step 6: Final answer
    x = 487,137.78

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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.