Home / 621,623.57-857,839.29-349,691.67

Finding the Fourth Proportional to 621,623.57, 857,839.29 and 349,691.67

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Solution

The fourth proportional to 621,623.57, 857,839.29 and 349,691.67 is: 482,573.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,623.57 : 857,839.29 = 349,691.67 : x
  2. Step 2: Convert to fraction form
    621,623.57/857,839.29 = 349,691.67/x
  3. Step 3: Cross multiply
    621,623.57x = 857,839.29 × 349,691.67
  4. Step 4: Simplify right side
    621,623.57x = 299,979,252,600.37
  5. Step 5: Solve for x
    x = 299,979,252,600.37/621,623.57
  6. Step 6: Final answer
    x = 482,573.81

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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.