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Finding the Fourth Proportional to 641,996.34, 885,954.15 and 355,516.08

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Solution

The fourth proportional to 641,996.34, 885,954.15 and 355,516.08 is: 490,611.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,996.34 : 885,954.15 = 355,516.08 : x
  2. Step 2: Convert to fraction form
    641,996.34/885,954.15 = 355,516.08/x
  3. Step 3: Cross multiply
    641,996.34x = 885,954.15 × 355,516.08
  4. Step 4: Simplify right side
    641,996.34x = 314,970,946,467.73
  5. Step 5: Solve for x
    x = 314,970,946,467.73/641,996.34
  6. Step 6: Final answer
    x = 490,611.75

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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.