Home / 778,906.88-1,074,769.92-439,366.40

Finding the Fourth Proportional to 778,906.88, 1,074,769.92 and 439,366.40

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Solution

The fourth proportional to 778,906.88, 1,074,769.92 and 439,366.40 is: 606,257.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,906.88 : 1,074,769.92 = 439,366.40 : x
  2. Step 2: Convert to fraction form
    778,906.88/1,074,769.92 = 439,366.40/x
  3. Step 3: Cross multiply
    778,906.88x = 1,074,769.92 × 439,366.40
  4. Step 4: Simplify right side
    778,906.88x = 472,217,790,578.69
  5. Step 5: Solve for x
    x = 472,217,790,578.69/778,906.88
  6. Step 6: Final answer
    x = 606,257.05

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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.