Home / 621,819.72-858,215.66-360,136.67

Finding the Fourth Proportional to 621,819.72, 858,215.66 and 360,136.67

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Solution

The fourth proportional to 621,819.72, 858,215.66 and 360,136.67 is: 497,049.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,819.72 : 858,215.66 = 360,136.67 : x
  2. Step 2: Convert to fraction form
    621,819.72/858,215.66 = 360,136.67/x
  3. Step 3: Cross multiply
    621,819.72x = 858,215.66 × 360,136.67
  4. Step 4: Simplify right side
    621,819.72x = 309,074,923,842.49
  5. Step 5: Solve for x
    x = 309,074,923,842.49/621,819.72
  6. Step 6: Final answer
    x = 497,049.09

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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.