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Finding the Fourth Proportional to 8,671,917, 13,068,823.89 and 7,808,408.40

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Solution

The fourth proportional to 8,671,917, 13,068,823.89 and 7,808,408.40 is: 11,767,492.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,671,917 : 13,068,823.89 = 7,808,408.40 : x
  2. Step 2: Convert to fraction form
    8,671,917/13,068,823.89 = 7,808,408.40/x
  3. Step 3: Cross multiply
    8,671,917x = 13,068,823.89 × 7,808,408.40
  4. Step 4: Simplify right side
    8,671,917x = 102,046,714,240,796.69
  5. Step 5: Solve for x
    x = 102,046,714,240,796.69/8,671,917
  6. Step 6: Final answer
    x = 11,767,492.04

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.