Home / 891,329.40-1,229,797.22-528,451.43

Finding the Fourth Proportional to 891,329.40, 1,229,797.22 and 528,451.43

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Solution

The fourth proportional to 891,329.40, 1,229,797.22 and 528,451.43 is: 729,122.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,329.40 : 1,229,797.22 = 528,451.43 : x
  2. Step 2: Convert to fraction form
    891,329.40/1,229,797.22 = 528,451.43/x
  3. Step 3: Cross multiply
    891,329.40x = 1,229,797.22 × 528,451.43
  4. Step 4: Simplify right side
    891,329.40x = 649,888,090,727.78
  5. Step 5: Solve for x
    x = 649,888,090,727.78/891,329.40
  6. Step 6: Final answer
    x = 729,122.24

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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.