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Finding the Fourth Proportional to 7,988,692.80, 11,983,039.20 and 6,713,234.40

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Solution

The fourth proportional to 7,988,692.80, 11,983,039.20 and 6,713,234.40 is: 10,069,851.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988,692.80 : 11,983,039.20 = 6,713,234.40 : x
  2. Step 2: Convert to fraction form
    7,988,692.80/11,983,039.20 = 6,713,234.40/x
  3. Step 3: Cross multiply
    7,988,692.80x = 11,983,039.20 × 6,713,234.40
  4. Step 4: Simplify right side
    7,988,692.80x = 80,444,950,973,988.48
  5. Step 5: Solve for x
    x = 80,444,950,973,988.48/7,988,692.80
  6. Step 6: Final answer
    x = 10,069,851.60

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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.