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Finding the Fourth Proportional to 572,702.70, 858,794.85 and 256,997.10

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Solution

The fourth proportional to 572,702.70, 858,794.85 and 256,997.10 is: 385,379.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,702.70 : 858,794.85 = 256,997.10 : x
  2. Step 2: Convert to fraction form
    572,702.70/858,794.85 = 256,997.10/x
  3. Step 3: Cross multiply
    572,702.70x = 858,794.85 × 256,997.10
  4. Step 4: Simplify right side
    572,702.70x = 220,707,785,944.94
  5. Step 5: Solve for x
    x = 220,707,785,944.94/572,702.70
  6. Step 6: Final answer
    x = 385,379.34

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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.