Home / 715,020.96-986,736.96-392,738.52

Finding the Fourth Proportional to 715,020.96, 986,736.96 and 392,738.52

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Solution

The fourth proportional to 715,020.96, 986,736.96 and 392,738.52 is: 541,983.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,020.96 : 986,736.96 = 392,738.52 : x
  2. Step 2: Convert to fraction form
    715,020.96/986,736.96 = 392,738.52/x
  3. Step 3: Cross multiply
    715,020.96x = 986,736.96 × 392,738.52
  4. Step 4: Simplify right side
    715,020.96x = 387,529,613,299.70
  5. Step 5: Solve for x
    x = 387,529,613,299.70/715,020.96
  6. Step 6: Final answer
    x = 541,983.57

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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.