Home / 743,020.43-1,025,551.94-420,920.42

Finding the Fourth Proportional to 743,020.43, 1,025,551.94 and 420,920.42

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Solution

The fourth proportional to 743,020.43, 1,025,551.94 and 420,920.42 is: 580,974.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,020.43 : 1,025,551.94 = 420,920.42 : x
  2. Step 2: Convert to fraction form
    743,020.43/1,025,551.94 = 420,920.42/x
  3. Step 3: Cross multiply
    743,020.43x = 1,025,551.94 × 420,920.42
  4. Step 4: Simplify right side
    743,020.43x = 431,675,746,084.25
  5. Step 5: Solve for x
    x = 431,675,746,084.25/743,020.43
  6. Step 6: Final answer
    x = 580,974.27

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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.