Home / 921,193.82-1,381,954.79-313,948.50

Finding the Fourth Proportional to 921,193.82, 1,381,954.79 and 313,948.50

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Solution

The fourth proportional to 921,193.82, 1,381,954.79 and 313,948.50 is: 470,978.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,193.82 : 1,381,954.79 = 313,948.50 : x
  2. Step 2: Convert to fraction form
    921,193.82/1,381,954.79 = 313,948.50/x
  3. Step 3: Cross multiply
    921,193.82x = 1,381,954.79 × 313,948.50
  4. Step 4: Simplify right side
    921,193.82x = 433,862,633,388.32
  5. Step 5: Solve for x
    x = 433,862,633,388.32/921,193.82
  6. Step 6: Final answer
    x = 470,978.66

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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.