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Finding the Fourth Proportional to 641,765.99, 885,601.92 and 351,321.35

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Solution

The fourth proportional to 641,765.99, 885,601.92 and 351,321.35 is: 484,804.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,765.99 : 885,601.92 = 351,321.35 : x
  2. Step 2: Convert to fraction form
    641,765.99/885,601.92 = 351,321.35/x
  3. Step 3: Cross multiply
    641,765.99x = 885,601.92 × 351,321.35
  4. Step 4: Simplify right side
    641,765.99x = 311,130,862,096.99
  5. Step 5: Solve for x
    x = 311,130,862,096.99/641,765.99
  6. Step 6: Final answer
    x = 484,804.22

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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.