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Finding the Fourth Proportional to 6,642,872.90, 9,964,309.35 and 1,851,301.70

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Solution

The fourth proportional to 6,642,872.90, 9,964,309.35 and 1,851,301.70 is: 2,776,952.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642,872.90 : 9,964,309.35 = 1,851,301.70 : x
  2. Step 2: Convert to fraction form
    6,642,872.90/9,964,309.35 = 1,851,301.70/x
  3. Step 3: Cross multiply
    6,642,872.90x = 9,964,309.35 × 1,851,301.70
  4. Step 4: Simplify right side
    6,642,872.90x = 18,446,942,838,980.89
  5. Step 5: Solve for x
    x = 18,446,942,838,980.89/6,642,872.90
  6. Step 6: Final answer
    x = 2,776,952.55

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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.