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Finding the Fourth Proportional to 666,658.25, 1,000,091.25 and 217,274.85

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Solution

The fourth proportional to 666,658.25, 1,000,091.25 and 217,274.85 is: 325,946.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,658.25 : 1,000,091.25 = 217,274.85 : x
  2. Step 2: Convert to fraction form
    666,658.25/1,000,091.25 = 217,274.85/x
  3. Step 3: Cross multiply
    666,658.25x = 1,000,091.25 × 217,274.85
  4. Step 4: Simplify right side
    666,658.25x = 217,294,675,243.69
  5. Step 5: Solve for x
    x = 217,294,675,243.69/666,658.25
  6. Step 6: Final answer
    x = 325,946.13

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1.5x scale

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.