Home / 1,087,906.31-1,631,473.32-319,189.47

Finding the Fourth Proportional to 1,087,906.31, 1,631,473.32 and 319,189.47

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Solution

The fourth proportional to 1,087,906.31, 1,631,473.32 and 319,189.47 is: 478,670.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,906.31 : 1,631,473.32 = 319,189.47 : x
  2. Step 2: Convert to fraction form
    1,087,906.31/1,631,473.32 = 319,189.47/x
  3. Step 3: Cross multiply
    1,087,906.31x = 1,631,473.32 × 319,189.47
  4. Step 4: Simplify right side
    1,087,906.31x = 520,749,104,329.94
  5. Step 5: Solve for x
    x = 520,749,104,329.94/1,087,906.31
  6. Step 6: Final answer
    x = 478,670.91

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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.