Home / 947,143.94-1,420,728.05-316,057.75

Finding the Fourth Proportional to 947,143.94, 1,420,728.05 and 316,057.75

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Solution

The fourth proportional to 947,143.94, 1,420,728.05 and 316,057.75 is: 474,090.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,143.94 : 1,420,728.05 = 316,057.75 : x
  2. Step 2: Convert to fraction form
    947,143.94/1,420,728.05 = 316,057.75/x
  3. Step 3: Cross multiply
    947,143.94x = 1,420,728.05 × 316,057.75
  4. Step 4: Simplify right side
    947,143.94x = 449,032,108,083.21
  5. Step 5: Solve for x
    x = 449,032,108,083.21/947,143.94
  6. Step 6: Final answer
    x = 474,090.68

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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.