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Finding the Fourth Proportional to 567,339.67, 782,926.37 and 312,690.79

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Solution

The fourth proportional to 567,339.67, 782,926.37 and 312,690.79 is: 431,511.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,339.67 : 782,926.37 = 312,690.79 : x
  2. Step 2: Convert to fraction form
    567,339.67/782,926.37 = 312,690.79/x
  3. Step 3: Cross multiply
    567,339.67x = 782,926.37 × 312,690.79
  4. Step 4: Simplify right side
    567,339.67x = 244,813,861,232.50
  5. Step 5: Solve for x
    x = 244,813,861,232.50/567,339.67
  6. Step 6: Final answer
    x = 431,511.98

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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.