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Finding the Fourth Proportional to 8,889,406.40, 13,334,692.80 and 2,499,867.20

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Solution

The fourth proportional to 8,889,406.40, 13,334,692.80 and 2,499,867.20 is: 3,749,964.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,889,406.40 : 13,334,692.80 = 2,499,867.20 : x
  2. Step 2: Convert to fraction form
    8,889,406.40/13,334,692.80 = 2,499,867.20/x
  3. Step 3: Cross multiply
    8,889,406.40x = 13,334,692.80 × 2,499,867.20
  4. Step 4: Simplify right side
    8,889,406.40x = 33,334,961,152,796.16
  5. Step 5: Solve for x
    x = 33,334,961,152,796.16/8,889,406.40
  6. Step 6: Final answer
    x = 3,749,964.81

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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.