Home / 921,805.92-1,383,136.56-389,451.24

Finding the Fourth Proportional to 921,805.92, 1,383,136.56 and 389,451.24

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Solution

The fourth proportional to 921,805.92, 1,383,136.56 and 389,451.24 is: 584,357.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,805.92 : 1,383,136.56 = 389,451.24 : x
  2. Step 2: Convert to fraction form
    921,805.92/1,383,136.56 = 389,451.24/x
  3. Step 3: Cross multiply
    921,805.92x = 1,383,136.56 × 389,451.24
  4. Step 4: Simplify right side
    921,805.92x = 538,664,248,381.33
  5. Step 5: Solve for x
    x = 538,664,248,381.33/921,805.92
  6. Step 6: Final answer
    x = 584,357.55

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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.