Home / 1,087,911.82-1,631,481.56-319,194.98

Finding the Fourth Proportional to 1,087,911.82, 1,631,481.56 and 319,194.98

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Solution

The fourth proportional to 1,087,911.82, 1,631,481.56 and 319,194.98 is: 478,679.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,911.82 : 1,631,481.56 = 319,194.98 : x
  2. Step 2: Convert to fraction form
    1,087,911.82/1,631,481.56 = 319,194.98/x
  3. Step 3: Cross multiply
    1,087,911.82x = 1,631,481.56 × 319,194.98
  4. Step 4: Simplify right side
    1,087,911.82x = 520,760,723,914.57
  5. Step 5: Solve for x
    x = 520,760,723,914.57/1,087,911.82
  6. Step 6: Final answer
    x = 478,679.17

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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.