Home / 631,857.60-947,835.36-211,134.96

Finding the Fourth Proportional to 631,857.60, 947,835.36 and 211,134.96

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Solution

The fourth proportional to 631,857.60, 947,835.36 and 211,134.96 is: 316,718.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,857.60 : 947,835.36 = 211,134.96 : x
  2. Step 2: Convert to fraction form
    631,857.60/947,835.36 = 211,134.96/x
  3. Step 3: Cross multiply
    631,857.60x = 947,835.36 × 211,134.96
  4. Step 4: Simplify right side
    631,857.60x = 200,121,180,820.19
  5. Step 5: Solve for x
    x = 200,121,180,820.19/631,857.60
  6. Step 6: Final answer
    x = 316,718.80

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Double scale
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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.