Home / 921,060.91-1,380,924.33-388,289.49

Finding the Fourth Proportional to 921,060.91, 1,380,924.33 and 388,289.49

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Solution

The fourth proportional to 921,060.91, 1,380,924.33 and 388,289.49 is: 582,153.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,060.91 : 1,380,924.33 = 388,289.49 : x
  2. Step 2: Convert to fraction form
    921,060.91/1,380,924.33 = 388,289.49/x
  3. Step 3: Cross multiply
    921,060.91x = 1,380,924.33 × 388,289.49
  4. Step 4: Simplify right side
    921,060.91x = 536,198,403,824.29
  5. Step 5: Solve for x
    x = 536,198,403,824.29/921,060.91
  6. Step 6: Final answer
    x = 582,153.03

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1.5x scale

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.