Home / 639,512.06-882,542.70-363,854.72

Finding the Fourth Proportional to 639,512.06, 882,542.70 and 363,854.72

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Solution

The fourth proportional to 639,512.06, 882,542.70 and 363,854.72 is: 502,128.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,512.06 : 882,542.70 = 363,854.72 : x
  2. Step 2: Convert to fraction form
    639,512.06/882,542.70 = 363,854.72/x
  3. Step 3: Cross multiply
    639,512.06x = 882,542.70 × 363,854.72
  4. Step 4: Simplify right side
    639,512.06x = 321,117,326,996.54
  5. Step 5: Solve for x
    x = 321,117,326,996.54/639,512.06
  6. Step 6: Final answer
    x = 502,128.65

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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.