Home / 921,962-1,383,487.32-389,448.56

Finding the Fourth Proportional to 921,962, 1,383,487.32 and 389,448.56

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Solution

The fourth proportional to 921,962, 1,383,487.32 and 389,448.56 is: 584,402.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,962 : 1,383,487.32 = 389,448.56 : x
  2. Step 2: Convert to fraction form
    921,962/1,383,487.32 = 389,448.56/x
  3. Step 3: Cross multiply
    921,962x = 1,383,487.32 × 389,448.56
  4. Step 4: Simplify right side
    921,962x = 538,797,144,552.26
  5. Step 5: Solve for x
    x = 538,797,144,552.26/921,962
  6. Step 6: Final answer
    x = 584,402.77

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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.