Home / 812,010.60-1,218,015.90-251,101.80

Finding the Fourth Proportional to 812,010.60, 1,218,015.90 and 251,101.80

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Solution

The fourth proportional to 812,010.60, 1,218,015.90 and 251,101.80 is: 376,652.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,010.60 : 1,218,015.90 = 251,101.80 : x
  2. Step 2: Convert to fraction form
    812,010.60/1,218,015.90 = 251,101.80/x
  3. Step 3: Cross multiply
    812,010.60x = 1,218,015.90 × 251,101.80
  4. Step 4: Simplify right side
    812,010.60x = 305,845,984,918.62
  5. Step 5: Solve for x
    x = 305,845,984,918.62/812,010.60
  6. Step 6: Final answer
    x = 376,652.70

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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.