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Finding the Fourth Proportional to 567,378.93, 782,977.91 and 309,255.86

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Solution

The fourth proportional to 567,378.93, 782,977.91 and 309,255.86 is: 426,770.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,378.93 : 782,977.91 = 309,255.86 : x
  2. Step 2: Convert to fraction form
    567,378.93/782,977.91 = 309,255.86/x
  3. Step 3: Cross multiply
    567,378.93x = 782,977.91 × 309,255.86
  4. Step 4: Simplify right side
    567,378.93x = 242,140,504,664.53
  5. Step 5: Solve for x
    x = 242,140,504,664.53/567,378.93
  6. Step 6: Final answer
    x = 426,770.35

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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.