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Finding the Fourth Proportional to 3,287,212, 4,930,818 and 891,056.64

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Solution

The fourth proportional to 3,287,212, 4,930,818 and 891,056.64 is: 1,336,584.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,287,212 : 4,930,818 = 891,056.64 : x
  2. Step 2: Convert to fraction form
    3,287,212/4,930,818 = 891,056.64/x
  3. Step 3: Cross multiply
    3,287,212x = 4,930,818 × 891,056.64
  4. Step 4: Simplify right side
    3,287,212x = 4,393,638,119,531.52
  5. Step 5: Solve for x
    x = 4,393,638,119,531.52/3,287,212
  6. Step 6: Final answer
    x = 1,336,584.96

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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.