Home / 947,105.08-1,420,669.92-316,018.88

Finding the Fourth Proportional to 947,105.08, 1,420,669.92 and 316,018.88

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Solution

The fourth proportional to 947,105.08, 1,420,669.92 and 316,018.88 is: 474,032.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,105.08 : 1,420,669.92 = 316,018.88 : x
  2. Step 2: Convert to fraction form
    947,105.08/1,420,669.92 = 316,018.88/x
  3. Step 3: Cross multiply
    947,105.08x = 1,420,669.92 × 316,018.88
  4. Step 4: Simplify right side
    947,105.08x = 448,958,516,968.09
  5. Step 5: Solve for x
    x = 448,958,516,968.09/947,105.08
  6. Step 6: Final answer
    x = 474,032.42

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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.