Home / 947,115.30-1,420,685.22-316,029.12

Finding the Fourth Proportional to 947,115.30, 1,420,685.22 and 316,029.12

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Solution

The fourth proportional to 947,115.30, 1,420,685.22 and 316,029.12 is: 474,047.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,115.30 : 1,420,685.22 = 316,029.12 : x
  2. Step 2: Convert to fraction form
    947,115.30/1,420,685.22 = 316,029.12/x
  3. Step 3: Cross multiply
    947,115.30x = 1,420,685.22 × 316,029.12
  4. Step 4: Simplify right side
    947,115.30x = 448,977,899,873.61
  5. Step 5: Solve for x
    x = 448,977,899,873.61/947,115.30
  6. Step 6: Final answer
    x = 474,047.77

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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.