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Finding the Fourth Proportional to 508,992.48, 762,307.20 and 491,278.32

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Solution

The fourth proportional to 508,992.48, 762,307.20 and 491,278.32 is: 735,777.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,992.48 : 762,307.20 = 491,278.32 : x
  2. Step 2: Convert to fraction form
    508,992.48/762,307.20 = 491,278.32/x
  3. Step 3: Cross multiply
    508,992.48x = 762,307.20 × 491,278.32
  4. Step 4: Simplify right side
    508,992.48x = 374,505,000,539.90
  5. Step 5: Solve for x
    x = 374,505,000,539.90/508,992.48
  6. Step 6: Final answer
    x = 735,777.08

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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.