Home / 639,173.84-882,034.11-352,690.20

Finding the Fourth Proportional to 639,173.84, 882,034.11 and 352,690.20

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Solution

The fourth proportional to 639,173.84, 882,034.11 and 352,690.20 is: 486,698.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,173.84 : 882,034.11 = 352,690.20 : x
  2. Step 2: Convert to fraction form
    639,173.84/882,034.11 = 352,690.20/x
  3. Step 3: Cross multiply
    639,173.84x = 882,034.11 × 352,690.20
  4. Step 4: Simplify right side
    639,173.84x = 311,084,786,662.72
  5. Step 5: Solve for x
    x = 311,084,786,662.72/639,173.84
  6. Step 6: Final answer
    x = 486,698.25

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Double scale
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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.