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Finding the Fourth Proportional to 8,304,312.30, 12,456,468.45 and 7,985,447.70

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Solution

The fourth proportional to 8,304,312.30, 12,456,468.45 and 7,985,447.70 is: 11,978,171.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,304,312.30 : 12,456,468.45 = 7,985,447.70 : x
  2. Step 2: Convert to fraction form
    8,304,312.30/12,456,468.45 = 7,985,447.70/x
  3. Step 3: Cross multiply
    8,304,312.30x = 12,456,468.45 × 7,985,447.70
  4. Step 4: Simplify right side
    8,304,312.30x = 99,470,477,334,175.06
  5. Step 5: Solve for x
    x = 99,470,477,334,175.06/8,304,312.30
  6. Step 6: Final answer
    x = 11,978,171.55

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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.