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Finding the Fourth Proportional to 3,579,397.89, 4,939,569.90 and 1,969,765.89

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Solution

The fourth proportional to 3,579,397.89, 4,939,569.90 and 1,969,765.89 is: 2,718,277.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,579,397.89 : 4,939,569.90 = 1,969,765.89 : x
  2. Step 2: Convert to fraction form
    3,579,397.89/4,939,569.90 = 1,969,765.89/x
  3. Step 3: Cross multiply
    3,579,397.89x = 4,939,569.90 × 1,969,765.89
  4. Step 4: Simplify right side
    3,579,397.89x = 9,729,796,307,715.22
  5. Step 5: Solve for x
    x = 9,729,796,307,715.22/3,579,397.89
  6. Step 6: Final answer
    x = 2,718,277.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.