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Finding the Fourth Proportional to 635,156.28, 876,519.36 and 348,678.72

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Solution

The fourth proportional to 635,156.28, 876,519.36 and 348,678.72 is: 481,178.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,156.28 : 876,519.36 = 348,678.72 : x
  2. Step 2: Convert to fraction form
    635,156.28/876,519.36 = 348,678.72/x
  3. Step 3: Cross multiply
    635,156.28x = 876,519.36 × 348,678.72
  4. Step 4: Simplify right side
    635,156.28x = 305,623,648,500.02
  5. Step 5: Solve for x
    x = 305,623,648,500.02/635,156.28
  6. Step 6: Final answer
    x = 481,178.66

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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.