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Finding the Fourth Proportional to 8,994,877.21, 12,412,946.87 and 4,920,496.21

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Solution

The fourth proportional to 8,994,877.21, 12,412,946.87 and 4,920,496.21 is: 6,790,293.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,994,877.21 : 12,412,946.87 = 4,920,496.21 : x
  2. Step 2: Convert to fraction form
    8,994,877.21/12,412,946.87 = 4,920,496.21/x
  3. Step 3: Cross multiply
    8,994,877.21x = 12,412,946.87 × 4,920,496.21
  4. Step 4: Simplify right side
    8,994,877.21x = 61,077,858,028,766.36
  5. Step 5: Solve for x
    x = 61,077,858,028,766.36/8,994,877.21
  6. Step 6: Final answer
    x = 6,790,293.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.