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Finding the Fourth Proportional to 503,808.06, 756,761.85 and 425,076.06

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Solution

The fourth proportional to 503,808.06, 756,761.85 and 425,076.06 is: 638,499.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,808.06 : 756,761.85 = 425,076.06 : x
  2. Step 2: Convert to fraction form
    503,808.06/756,761.85 = 425,076.06/x
  3. Step 3: Cross multiply
    503,808.06x = 756,761.85 × 425,076.06
  4. Step 4: Simplify right side
    503,808.06x = 321,681,345,556.31
  5. Step 5: Solve for x
    x = 321,681,345,556.31/503,808.06
  6. Step 6: Final answer
    x = 638,499.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.