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Finding the Fourth Proportional to 6,487,175.88, 9,721,315.98 and 3,117,446.28

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Solution

The fourth proportional to 6,487,175.88, 9,721,315.98 and 3,117,446.28 is: 4,671,629.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,487,175.88 : 9,721,315.98 = 3,117,446.28 : x
  2. Step 2: Convert to fraction form
    6,487,175.88/9,721,315.98 = 3,117,446.28/x
  3. Step 3: Cross multiply
    6,487,175.88x = 9,721,315.98 × 3,117,446.28
  4. Step 4: Simplify right side
    6,487,175.88x = 30,305,680,338,555.55
  5. Step 5: Solve for x
    x = 30,305,680,338,555.55/6,487,175.88
  6. Step 6: Final answer
    x = 4,671,629.21

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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.