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Finding the Fourth Proportional to 9,985,778.20, 14,978,667.30 and 9,985,778.20

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Solution

The fourth proportional to 9,985,778.20, 14,978,667.30 and 9,985,778.20 is: 14,978,667.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,985,778.20 : 14,978,667.30 = 9,985,778.20 : x
  2. Step 2: Convert to fraction form
    9,985,778.20/14,978,667.30 = 9,985,778.20/x
  3. Step 3: Cross multiply
    9,985,778.20x = 14,978,667.30 × 9,985,778.20
  4. Step 4: Simplify right side
    9,985,778.20x = 149,573,649,389,392.84
  5. Step 5: Solve for x
    x = 149,573,649,389,392.84/9,985,778.20
  6. Step 6: Final answer
    x = 14,978,667.30

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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.