Home / 812,357.65-1,121,088.60-449,781.50

Finding the Fourth Proportional to 812,357.65, 1,121,088.60 and 449,781.50

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Solution

The fourth proportional to 812,357.65, 1,121,088.60 and 449,781.50 is: 620,717.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,357.65 : 1,121,088.60 = 449,781.50 : x
  2. Step 2: Convert to fraction form
    812,357.65/1,121,088.60 = 449,781.50/x
  3. Step 3: Cross multiply
    812,357.65x = 1,121,088.60 × 449,781.50
  4. Step 4: Simplify right side
    812,357.65x = 504,244,914,943.62
  5. Step 5: Solve for x
    x = 504,244,914,943.62/812,357.65
  6. Step 6: Final answer
    x = 620,717.87

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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.