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Finding the Fourth Proportional to 503,945.80, 755,918.70 and 252,003.40

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Solution

The fourth proportional to 503,945.80, 755,918.70 and 252,003.40 is: 378,005.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,945.80 : 755,918.70 = 252,003.40 : x
  2. Step 2: Convert to fraction form
    503,945.80/755,918.70 = 252,003.40/x
  3. Step 3: Cross multiply
    503,945.80x = 755,918.70 × 252,003.40
  4. Step 4: Simplify right side
    503,945.80x = 190,494,082,523.58
  5. Step 5: Solve for x
    x = 190,494,082,523.58/503,945.80
  6. Step 6: Final answer
    x = 378,005.10

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Half scale
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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.