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Finding the Fourth Proportional to 641,711.78, 885,562.51 and 351,342.16

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Solution

The fourth proportional to 641,711.78, 885,562.51 and 351,342.16 is: 484,852.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,711.78 : 885,562.51 = 351,342.16 : x
  2. Step 2: Convert to fraction form
    641,711.78/885,562.51 = 351,342.16/x
  3. Step 3: Cross multiply
    641,711.78x = 885,562.51 × 351,342.16
  4. Step 4: Simplify right side
    641,711.78x = 311,135,441,986.16
  5. Step 5: Solve for x
    x = 311,135,441,986.16/641,711.78
  6. Step 6: Final answer
    x = 484,852.32

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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.