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Finding the Fourth Proportional to 641,729.31, 885,596.94 and 351,336.03

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Solution

The fourth proportional to 641,729.31, 885,596.94 and 351,336.03 is: 484,849.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,729.31 : 885,596.94 = 351,336.03 : x
  2. Step 2: Convert to fraction form
    641,729.31/885,596.94 = 351,336.03/x
  3. Step 3: Cross multiply
    641,729.31x = 885,596.94 × 351,336.03
  4. Step 4: Simplify right side
    641,729.31x = 311,142,116,400.74
  5. Step 5: Solve for x
    x = 311,142,116,400.74/641,729.31
  6. Step 6: Final answer
    x = 484,849.47

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1.5x scale

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.