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Finding the Fourth Proportional to 478,591.26, 660,460.38 and 263,739

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Solution

The fourth proportional to 478,591.26, 660,460.38 and 263,739 is: 363,962.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,591.26 : 660,460.38 = 263,739 : x
  2. Step 2: Convert to fraction form
    478,591.26/660,460.38 = 263,739/x
  3. Step 3: Cross multiply
    478,591.26x = 660,460.38 × 263,739
  4. Step 4: Simplify right side
    478,591.26x = 174,189,160,160.82
  5. Step 5: Solve for x
    x = 174,189,160,160.82/478,591.26
  6. Step 6: Final answer
    x = 363,962.27

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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.