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Finding the Fourth Proportional to 8,971,620.90, 13,457,431.35 and 4,188,651.90

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Solution

The fourth proportional to 8,971,620.90, 13,457,431.35 and 4,188,651.90 is: 6,282,977.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,971,620.90 : 13,457,431.35 = 4,188,651.90 : x
  2. Step 2: Convert to fraction form
    8,971,620.90/13,457,431.35 = 4,188,651.90/x
  3. Step 3: Cross multiply
    8,971,620.90x = 13,457,431.35 × 4,188,651.90
  4. Step 4: Simplify right side
    8,971,620.90x = 56,368,495,393,297.06
  5. Step 5: Solve for x
    x = 56,368,495,393,297.06/8,971,620.90
  6. Step 6: Final answer
    x = 6,282,977.85

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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.