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Finding the Fourth Proportional to 365,790.70, 512,456.90 and 365,790.70

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Solution

The fourth proportional to 365,790.70, 512,456.90 and 365,790.70 is: 512,456.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,790.70 : 512,456.90 = 365,790.70 : x
  2. Step 2: Convert to fraction form
    365,790.70/512,456.90 = 365,790.70/x
  3. Step 3: Cross multiply
    365,790.70x = 512,456.90 × 365,790.70
  4. Step 4: Simplify right side
    365,790.70x = 187,451,968,170.83
  5. Step 5: Solve for x
    x = 187,451,968,170.83/365,790.70
  6. Step 6: Final answer
    x = 512,456.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.