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Finding the Fourth Proportional to 464,604.64, 640,918.30 and 303,553.96

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Solution

The fourth proportional to 464,604.64, 640,918.30 and 303,553.96 is: 418,750.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,604.64 : 640,918.30 = 303,553.96 : x
  2. Step 2: Convert to fraction form
    464,604.64/640,918.30 = 303,553.96/x
  3. Step 3: Cross multiply
    464,604.64x = 640,918.30 × 303,553.96
  4. Step 4: Simplify right side
    464,604.64x = 194,553,288,001.47
  5. Step 5: Solve for x
    x = 194,553,288,001.47/464,604.64
  6. Step 6: Final answer
    x = 418,750.20

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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.