Home / 812,811.28-1,218,874.56-307,287.04

Finding the Fourth Proportional to 812,811.28, 1,218,874.56 and 307,287.04

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Solution

The fourth proportional to 812,811.28, 1,218,874.56 and 307,287.04 is: 460,801.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,811.28 : 1,218,874.56 = 307,287.04 : x
  2. Step 2: Convert to fraction form
    812,811.28/1,218,874.56 = 307,287.04/x
  3. Step 3: Cross multiply
    812,811.28x = 1,218,874.56 × 307,287.04
  4. Step 4: Simplify right side
    812,811.28x = 374,544,355,673.70
  5. Step 5: Solve for x
    x = 374,544,355,673.70/812,811.28
  6. Step 6: Final answer
    x = 460,801.13

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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.