Home / 920,150.64-1,380,447.42-387,823.92

Finding the Fourth Proportional to 920,150.64, 1,380,447.42 and 387,823.92

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Solution

The fourth proportional to 920,150.64, 1,380,447.42 and 387,823.92 is: 581,829.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,150.64 : 1,380,447.42 = 387,823.92 : x
  2. Step 2: Convert to fraction form
    920,150.64/1,380,447.42 = 387,823.92/x
  3. Step 3: Cross multiply
    920,150.64x = 1,380,447.42 × 387,823.92
  4. Step 4: Simplify right side
    920,150.64x = 535,370,529,778.29
  5. Step 5: Solve for x
    x = 535,370,529,778.29/920,150.64
  6. Step 6: Final answer
    x = 581,829.22

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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.