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Finding the Fourth Proportional to 567,171.45, 782,687.34 and 309,051.50

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Solution

The fourth proportional to 567,171.45, 782,687.34 and 309,051.50 is: 426,486.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,171.45 : 782,687.34 = 309,051.50 : x
  2. Step 2: Convert to fraction form
    567,171.45/782,687.34 = 309,051.50/x
  3. Step 3: Cross multiply
    567,171.45x = 782,687.34 × 309,051.50
  4. Step 4: Simplify right side
    567,171.45x = 241,890,692,544.57
  5. Step 5: Solve for x
    x = 241,890,692,544.57/567,171.45
  6. Step 6: Final answer
    x = 426,486.02

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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.