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Finding the Fourth Proportional to 12,810,641.44, 19,218,703.44 and 4,723,640.32

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Solution

The fourth proportional to 12,810,641.44, 19,218,703.44 and 4,723,640.32 is: 7,086,471.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,810,641.44 : 19,218,703.44 = 4,723,640.32 : x
  2. Step 2: Convert to fraction form
    12,810,641.44/19,218,703.44 = 4,723,640.32/x
  3. Step 3: Cross multiply
    12,810,641.44x = 19,218,703.44 × 4,723,640.32
  4. Step 4: Simplify right side
    12,810,641.44x = 90,782,242,467,306.72
  5. Step 5: Solve for x
    x = 90,782,242,467,306.72/12,810,641.44
  6. Step 6: Final answer
    x = 7,086,471.27

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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.