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Finding the Fourth Proportional to 617,327.18, 851,944.50 and 345,378.79

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Solution

The fourth proportional to 617,327.18, 851,944.50 and 345,378.79 is: 476,641.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,327.18 : 851,944.50 = 345,378.79 : x
  2. Step 2: Convert to fraction form
    617,327.18/851,944.50 = 345,378.79/x
  3. Step 3: Cross multiply
    617,327.18x = 851,944.50 × 345,378.79
  4. Step 4: Simplify right side
    617,327.18x = 294,243,560,557.16
  5. Step 5: Solve for x
    x = 294,243,560,557.16/617,327.18
  6. Step 6: Final answer
    x = 476,641.19

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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.