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Finding the Fourth Proportional to 12,636,652.88, 18,954,956.28 and 4,116,979.28

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Solution

The fourth proportional to 12,636,652.88, 18,954,956.28 and 4,116,979.28 is: 6,175,461.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636,652.88 : 18,954,956.28 = 4,116,979.28 : x
  2. Step 2: Convert to fraction form
    12,636,652.88/18,954,956.28 = 4,116,979.28/x
  3. Step 3: Cross multiply
    12,636,652.88x = 18,954,956.28 × 4,116,979.28
  4. Step 4: Simplify right side
    12,636,652.88x = 78,037,162,258,065.88
  5. Step 5: Solve for x
    x = 78,037,162,258,065.88/12,636,652.88
  6. Step 6: Final answer
    x = 6,175,461.41

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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.