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Finding the Fourth Proportional to 611,970.19, 917,299 and 295,992.43

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Solution

The fourth proportional to 611,970.19, 917,299 and 295,992.43 is: 443,671.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,970.19 : 917,299 = 295,992.43 : x
  2. Step 2: Convert to fraction form
    611,970.19/917,299 = 295,992.43/x
  3. Step 3: Cross multiply
    611,970.19x = 917,299 × 295,992.43
  4. Step 4: Simplify right side
    611,970.19x = 271,513,560,046.57
  5. Step 5: Solve for x
    x = 271,513,560,046.57/611,970.19
  6. Step 6: Final answer
    x = 443,671.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.