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Finding the Fourth Proportional to 6,443,381.72, 9,662,747.52 and 1,893,213.40

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Solution

The fourth proportional to 6,443,381.72, 9,662,747.52 and 1,893,213.40 is: 2,839,136.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,443,381.72 : 9,662,747.52 = 1,893,213.40 : x
  2. Step 2: Convert to fraction form
    6,443,381.72/9,662,747.52 = 1,893,213.40/x
  3. Step 3: Cross multiply
    6,443,381.72x = 9,662,747.52 × 1,893,213.40
  4. Step 4: Simplify right side
    6,443,381.72x = 18,293,643,085,680.77
  5. Step 5: Solve for x
    x = 18,293,643,085,680.77/6,443,381.72
  6. Step 6: Final answer
    x = 2,839,136.94

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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.