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Finding the Fourth Proportional to 7,788,005.90, 11,682,008.85 and 5,100,620.30

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Solution

The fourth proportional to 7,788,005.90, 11,682,008.85 and 5,100,620.30 is: 7,650,930.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,788,005.90 : 11,682,008.85 = 5,100,620.30 : x
  2. Step 2: Convert to fraction form
    7,788,005.90/11,682,008.85 = 5,100,620.30/x
  3. Step 3: Cross multiply
    7,788,005.90x = 11,682,008.85 × 5,100,620.30
  4. Step 4: Simplify right side
    7,788,005.90x = 59,585,491,485,089.65
  5. Step 5: Solve for x
    x = 59,585,491,485,089.65/7,788,005.90
  6. Step 6: Final answer
    x = 7,650,930.45

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Double scale
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Similar ratio
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1.5x scale

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.