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Finding the Fourth Proportional to 12,985,813.89, 19,478,524.01 and 4,466,224.17

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Solution

The fourth proportional to 12,985,813.89, 19,478,524.01 and 4,466,224.17 is: 6,699,268.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,985,813.89 : 19,478,524.01 = 4,466,224.17 : x
  2. Step 2: Convert to fraction form
    12,985,813.89/19,478,524.01 = 4,466,224.17/x
  3. Step 3: Cross multiply
    12,985,813.89x = 19,478,524.01 × 4,466,224.17
  4. Step 4: Simplify right side
    12,985,813.89x = 86,995,454,707,056.19
  5. Step 5: Solve for x
    x = 86,995,454,707,056.19/12,985,813.89
  6. Step 6: Final answer
    x = 6,699,268.56

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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.