Home / 621,144.30-857,159.28-349,223.70

Finding the Fourth Proportional to 621,144.30, 857,159.28 and 349,223.70

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Solution

The fourth proportional to 621,144.30, 857,159.28 and 349,223.70 is: 481,917.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,144.30 : 857,159.28 = 349,223.70 : x
  2. Step 2: Convert to fraction form
    621,144.30/857,159.28 = 349,223.70/x
  3. Step 3: Cross multiply
    621,144.30x = 857,159.28 × 349,223.70
  4. Step 4: Simplify right side
    621,144.30x = 299,340,335,250.94
  5. Step 5: Solve for x
    x = 299,340,335,250.94/621,144.30
  6. Step 6: Final answer
    x = 481,917.54

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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.