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Finding the Fourth Proportional to 7,952,187.80, 11,928,281.70 and 7,416,810.20

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Solution

The fourth proportional to 7,952,187.80, 11,928,281.70 and 7,416,810.20 is: 11,125,215.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,952,187.80 : 11,928,281.70 = 7,416,810.20 : x
  2. Step 2: Convert to fraction form
    7,952,187.80/11,928,281.70 = 7,416,810.20/x
  3. Step 3: Cross multiply
    7,952,187.80x = 11,928,281.70 × 7,416,810.20
  4. Step 4: Simplify right side
    7,952,187.80x = 88,469,801,381,033.34
  5. Step 5: Solve for x
    x = 88,469,801,381,033.34/7,952,187.80
  6. Step 6: Final answer
    x = 11,125,215.30

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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.