Home / 1,008,137.79-1,391,229.32-555,428.79

Finding the Fourth Proportional to 1,008,137.79, 1,391,229.32 and 555,428.79

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Solution

The fourth proportional to 1,008,137.79, 1,391,229.32 and 555,428.79 is: 766,491.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,137.79 : 1,391,229.32 = 555,428.79 : x
  2. Step 2: Convert to fraction form
    1,008,137.79/1,391,229.32 = 555,428.79/x
  3. Step 3: Cross multiply
    1,008,137.79x = 1,391,229.32 × 555,428.79
  4. Step 4: Simplify right side
    1,008,137.79x = 772,728,815,042.98
  5. Step 5: Solve for x
    x = 772,728,815,042.98/1,008,137.79
  6. Step 6: Final answer
    x = 766,491.27

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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.