Home / 777,715.26-1,073,247.18-420,019.26

Finding the Fourth Proportional to 777,715.26, 1,073,247.18 and 420,019.26

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Solution

The fourth proportional to 777,715.26, 1,073,247.18 and 420,019.26 is: 579,626.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,715.26 : 1,073,247.18 = 420,019.26 : x
  2. Step 2: Convert to fraction form
    777,715.26/1,073,247.18 = 420,019.26/x
  3. Step 3: Cross multiply
    777,715.26x = 1,073,247.18 × 420,019.26
  4. Step 4: Simplify right side
    777,715.26x = 450,784,486,340.69
  5. Step 5: Solve for x
    x = 450,784,486,340.69/777,715.26
  6. Step 6: Final answer
    x = 579,626.64

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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.