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Finding the Fourth Proportional to 635,300.43, 876,728.72 and 348,821.65

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Solution

The fourth proportional to 635,300.43, 876,728.72 and 348,821.65 is: 481,381.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,300.43 : 876,728.72 = 348,821.65 : x
  2. Step 2: Convert to fraction form
    635,300.43/876,728.72 = 348,821.65/x
  3. Step 3: Cross multiply
    635,300.43x = 876,728.72 × 348,821.65
  4. Step 4: Simplify right side
    635,300.43x = 305,821,958,712.79
  5. Step 5: Solve for x
    x = 305,821,958,712.79/635,300.43
  6. Step 6: Final answer
    x = 481,381.63

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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.