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Finding the Fourth Proportional to 641,682.27, 885,483.50 and 355,185.27

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Solution

The fourth proportional to 641,682.27, 885,483.50 and 355,185.27 is: 490,134.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,682.27 : 885,483.50 = 355,185.27 : x
  2. Step 2: Convert to fraction form
    641,682.27/885,483.50 = 355,185.27/x
  3. Step 3: Cross multiply
    641,682.27x = 885,483.50 × 355,185.27
  4. Step 4: Simplify right side
    641,682.27x = 314,510,694,252.12
  5. Step 5: Solve for x
    x = 314,510,694,252.12/641,682.27
  6. Step 6: Final answer
    x = 490,134.62

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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.