Home / 649,085.43-973,738.85-289,386.80

Finding the Fourth Proportional to 649,085.43, 973,738.85 and 289,386.80

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Solution

The fourth proportional to 649,085.43, 973,738.85 and 289,386.80 is: 434,129.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,085.43 : 973,738.85 = 289,386.80 : x
  2. Step 2: Convert to fraction form
    649,085.43/973,738.85 = 289,386.80/x
  3. Step 3: Cross multiply
    649,085.43x = 973,738.85 × 289,386.80
  4. Step 4: Simplify right side
    649,085.43x = 281,787,172,760.37
  5. Step 5: Solve for x
    x = 281,787,172,760.37/649,085.43
  6. Step 6: Final answer
    x = 434,129.56

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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.