Home / 947,218.30-1,420,899.54-316,131.10

Finding the Fourth Proportional to 947,218.30, 1,420,899.54 and 316,131.10

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Solution

The fourth proportional to 947,218.30, 1,420,899.54 and 316,131.10 is: 474,220.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,218.30 : 1,420,899.54 = 316,131.10 : x
  2. Step 2: Convert to fraction form
    947,218.30/1,420,899.54 = 316,131.10/x
  3. Step 3: Cross multiply
    947,218.30x = 1,420,899.54 × 316,131.10
  4. Step 4: Simplify right side
    947,218.30x = 449,190,534,569.69
  5. Step 5: Solve for x
    x = 449,190,534,569.69/947,218.30
  6. Step 6: Final answer
    x = 474,220.71

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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.