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Finding the Fourth Proportional to 451,997.22, 679,054.50 and 426,463.59

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Solution

The fourth proportional to 451,997.22, 679,054.50 and 426,463.59 is: 640,694.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,997.22 : 679,054.50 = 426,463.59 : x
  2. Step 2: Convert to fraction form
    451,997.22/679,054.50 = 426,463.59/x
  3. Step 3: Cross multiply
    451,997.22x = 679,054.50 × 426,463.59
  4. Step 4: Simplify right side
    451,997.22x = 289,592,019,875.66
  5. Step 5: Solve for x
    x = 289,592,019,875.66/451,997.22
  6. Step 6: Final answer
    x = 640,694.25

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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.