Home / 621,680.28-857,917.38-349,748.28

Finding the Fourth Proportional to 621,680.28, 857,917.38 and 349,748.28

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Solution

The fourth proportional to 621,680.28, 857,917.38 and 349,748.28 is: 482,651.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,680.28 : 857,917.38 = 349,748.28 : x
  2. Step 2: Convert to fraction form
    621,680.28/857,917.38 = 349,748.28/x
  3. Step 3: Cross multiply
    621,680.28x = 857,917.38 × 349,748.28
  4. Step 4: Simplify right side
    621,680.28x = 300,055,128,037.11
  5. Step 5: Solve for x
    x = 300,055,128,037.11/621,680.28
  6. Step 6: Final answer
    x = 482,651.84

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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.