Home / 639,400.20-959,100.06-190,119.24

Finding the Fourth Proportional to 639,400.20, 959,100.06 and 190,119.24

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Solution

The fourth proportional to 639,400.20, 959,100.06 and 190,119.24 is: 285,178.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,400.20 : 959,100.06 = 190,119.24 : x
  2. Step 2: Convert to fraction form
    639,400.20/959,100.06 = 190,119.24/x
  3. Step 3: Cross multiply
    639,400.20x = 959,100.06 × 190,119.24
  4. Step 4: Simplify right side
    639,400.20x = 182,343,374,491.15
  5. Step 5: Solve for x
    x = 182,343,374,491.15/639,400.20
  6. Step 6: Final answer
    x = 285,178.79

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.