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Finding the Fourth Proportional to 464,980.48, 641,507.86 and 303,928.36

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Solution

The fourth proportional to 464,980.48, 641,507.86 and 303,928.36 is: 419,313.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,980.48 : 641,507.86 = 303,928.36 : x
  2. Step 2: Convert to fraction form
    464,980.48/641,507.86 = 303,928.36/x
  3. Step 3: Cross multiply
    464,980.48x = 641,507.86 × 303,928.36
  4. Step 4: Simplify right side
    464,980.48x = 194,972,431,816.91
  5. Step 5: Solve for x
    x = 194,972,431,816.91/464,980.48
  6. Step 6: Final answer
    x = 419,313.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.