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Finding the Fourth Proportional to 662,911.94, 994,407.20 and 207,588.32

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Solution

The fourth proportional to 662,911.94, 994,407.20 and 207,588.32 is: 311,394.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,911.94 : 994,407.20 = 207,588.32 : x
  2. Step 2: Convert to fraction form
    662,911.94/994,407.20 = 207,588.32/x
  3. Step 3: Cross multiply
    662,911.94x = 994,407.20 × 207,588.32
  4. Step 4: Simplify right side
    662,911.94x = 206,427,320,043.90
  5. Step 5: Solve for x
    x = 206,427,320,043.90/662,911.94
  6. Step 6: Final answer
    x = 311,394.78

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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.