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Finding the Fourth Proportional to 8,220,663.15, 12,330,994.73 and 8,220,663.15

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Solution

The fourth proportional to 8,220,663.15, 12,330,994.73 and 8,220,663.15 is: 12,330,994.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220,663.15 : 12,330,994.73 = 8,220,663.15 : x
  2. Step 2: Convert to fraction form
    8,220,663.15/12,330,994.73 = 8,220,663.15/x
  3. Step 3: Cross multiply
    8,220,663.15x = 12,330,994.73 × 8,220,663.15
  4. Step 4: Simplify right side
    8,220,663.15x = 101,368,953,938,651.89
  5. Step 5: Solve for x
    x = 101,368,953,938,651.89/8,220,663.15
  6. Step 6: Final answer
    x = 12,330,994.73

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1.5x scale

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.