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Finding the Fourth Proportional to 455,997.60, 683,996.40 and 372,016.80

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Solution

The fourth proportional to 455,997.60, 683,996.40 and 372,016.80 is: 558,025.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,997.60 : 683,996.40 = 372,016.80 : x
  2. Step 2: Convert to fraction form
    455,997.60/683,996.40 = 372,016.80/x
  3. Step 3: Cross multiply
    455,997.60x = 683,996.40 × 372,016.80
  4. Step 4: Simplify right side
    455,997.60x = 254,458,151,939.52
  5. Step 5: Solve for x
    x = 254,458,151,939.52/455,997.60
  6. Step 6: Final answer
    x = 558,025.20

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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.