Home / 12,879,008.40-19,318,512.60-7,777,174.80

Finding the Fourth Proportional to 12,879,008.40, 19,318,512.60 and 7,777,174.80

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Solution

The fourth proportional to 12,879,008.40, 19,318,512.60 and 7,777,174.80 is: 11,665,762.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879,008.40 : 19,318,512.60 = 7,777,174.80 : x
  2. Step 2: Convert to fraction form
    12,879,008.40/19,318,512.60 = 7,777,174.80/x
  3. Step 3: Cross multiply
    12,879,008.40x = 19,318,512.60 × 7,777,174.80
  4. Step 4: Simplify right side
    12,879,008.40x = 150,243,449,366,202.50
  5. Step 5: Solve for x
    x = 150,243,449,366,202.50/12,879,008.40
  6. Step 6: Final answer
    x = 11,665,762.20

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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.