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Finding the Fourth Proportional to 655,381.78, 983,454.99 and 276,279.50

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Solution

The fourth proportional to 655,381.78, 983,454.99 and 276,279.50 is: 414,580.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,381.78 : 983,454.99 = 276,279.50 : x
  2. Step 2: Convert to fraction form
    655,381.78/983,454.99 = 276,279.50/x
  3. Step 3: Cross multiply
    655,381.78x = 983,454.99 × 276,279.50
  4. Step 4: Simplify right side
    655,381.78x = 271,708,451,528.31
  5. Step 5: Solve for x
    x = 271,708,451,528.31/655,381.78
  6. Step 6: Final answer
    x = 414,580.42

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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.