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Finding the Fourth Proportional to 378,003.40, 529,904.60 and 378,003.40

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Solution

The fourth proportional to 378,003.40, 529,904.60 and 378,003.40 is: 529,904.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,003.40 : 529,904.60 = 378,003.40 : x
  2. Step 2: Convert to fraction form
    378,003.40/529,904.60 = 378,003.40/x
  3. Step 3: Cross multiply
    378,003.40x = 529,904.60 × 378,003.40
  4. Step 4: Simplify right side
    378,003.40x = 200,305,740,475.64
  5. Step 5: Solve for x
    x = 200,305,740,475.64/378,003.40
  6. Step 6: Final answer
    x = 529,904.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.