Home / 641,819.45-885,804.11-369,834.41

Finding the Fourth Proportional to 641,819.45, 885,804.11 and 369,834.41

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Solution

The fourth proportional to 641,819.45, 885,804.11 and 369,834.41 is: 510,425.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,819.45 : 885,804.11 = 369,834.41 : x
  2. Step 2: Convert to fraction form
    641,819.45/885,804.11 = 369,834.41/x
  3. Step 3: Cross multiply
    641,819.45x = 885,804.11 × 369,834.41
  4. Step 4: Simplify right side
    641,819.45x = 327,600,836,892.99
  5. Step 5: Solve for x
    x = 327,600,836,892.99/641,819.45
  6. Step 6: Final answer
    x = 510,425.23

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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.