Home / 812,515.79-1,121,257.86-449,931.84

Finding the Fourth Proportional to 812,515.79, 1,121,257.86 and 449,931.84

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Solution

The fourth proportional to 812,515.79, 1,121,257.86 and 449,931.84 is: 620,898.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,515.79 : 1,121,257.86 = 449,931.84 : x
  2. Step 2: Convert to fraction form
    812,515.79/1,121,257.86 = 449,931.84/x
  3. Step 3: Cross multiply
    812,515.79x = 1,121,257.86 × 449,931.84
  4. Step 4: Simplify right side
    812,515.79x = 504,489,612,064.26
  5. Step 5: Solve for x
    x = 504,489,612,064.26/812,515.79
  6. Step 6: Final answer
    x = 620,898.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.