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Finding the Fourth Proportional to 635,046.40, 876,373.12 and 348,561.28

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Solution

The fourth proportional to 635,046.40, 876,373.12 and 348,561.28 is: 481,019.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,046.40 : 876,373.12 = 348,561.28 : x
  2. Step 2: Convert to fraction form
    635,046.40/876,373.12 = 348,561.28/x
  3. Step 3: Cross multiply
    635,046.40x = 876,373.12 × 348,561.28
  4. Step 4: Simplify right side
    635,046.40x = 305,469,736,464.79
  5. Step 5: Solve for x
    x = 305,469,736,464.79/635,046.40
  6. Step 6: Final answer
    x = 481,019.55

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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.