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Finding the Fourth Proportional to 603,120.13, 832,372.20 and 345,020.87

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Solution

The fourth proportional to 603,120.13, 832,372.20 and 345,020.87 is: 476,166.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,120.13 : 832,372.20 = 345,020.87 : x
  2. Step 2: Convert to fraction form
    603,120.13/832,372.20 = 345,020.87/x
  3. Step 3: Cross multiply
    603,120.13x = 832,372.20 × 345,020.87
  4. Step 4: Simplify right side
    603,120.13x = 287,185,778,006.65
  5. Step 5: Solve for x
    x = 287,185,778,006.65/603,120.13
  6. Step 6: Final answer
    x = 476,166.79

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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.