Home / 699,451.92-965,307.24-397,645.20

Finding the Fourth Proportional to 699,451.92, 965,307.24 and 397,645.20

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Solution

The fourth proportional to 699,451.92, 965,307.24 and 397,645.20 is: 548,786.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,451.92 : 965,307.24 = 397,645.20 : x
  2. Step 2: Convert to fraction form
    699,451.92/965,307.24 = 397,645.20/x
  3. Step 3: Cross multiply
    699,451.92x = 965,307.24 × 397,645.20
  4. Step 4: Simplify right side
    699,451.92x = 383,849,790,511.25
  5. Step 5: Solve for x
    x = 383,849,790,511.25/699,451.92
  6. Step 6: Final answer
    x = 548,786.53

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Double scale
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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.