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Finding the Fourth Proportional to 617,328.37, 851,946.14 and 345,379.98

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Solution

The fourth proportional to 617,328.37, 851,946.14 and 345,379.98 is: 476,642.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,328.37 : 851,946.14 = 345,379.98 : x
  2. Step 2: Convert to fraction form
    617,328.37/851,946.14 = 345,379.98/x
  3. Step 3: Cross multiply
    617,328.37x = 851,946.14 × 345,379.98
  4. Step 4: Simplify right side
    617,328.37x = 294,245,139,067.38
  5. Step 5: Solve for x
    x = 294,245,139,067.38/617,328.37
  6. Step 6: Final answer
    x = 476,642.83

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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.