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Finding the Fourth Proportional to 661,311.92, 906,666.42 and 649,354.50

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Solution

The fourth proportional to 661,311.92, 906,666.42 and 649,354.50 is: 890,272.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,311.92 : 906,666.42 = 649,354.50 : x
  2. Step 2: Convert to fraction form
    661,311.92/906,666.42 = 649,354.50/x
  3. Step 3: Cross multiply
    661,311.92x = 906,666.42 × 649,354.50
  4. Step 4: Simplify right side
    661,311.92x = 588,747,919,825.89
  5. Step 5: Solve for x
    x = 588,747,919,825.89/661,311.92
  6. Step 6: Final answer
    x = 890,272.66

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.