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Finding the Fourth Proportional to 568,356.78, 784,327.35 and 313,702.50

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Solution

The fourth proportional to 568,356.78, 784,327.35 and 313,702.50 is: 432,906.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,356.78 : 784,327.35 = 313,702.50 : x
  2. Step 2: Convert to fraction form
    568,356.78/784,327.35 = 313,702.50/x
  3. Step 3: Cross multiply
    568,356.78x = 784,327.35 × 313,702.50
  4. Step 4: Simplify right side
    568,356.78x = 246,045,450,513.38
  5. Step 5: Solve for x
    x = 246,045,450,513.38/568,356.78
  6. Step 6: Final answer
    x = 432,906.69

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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.