Home / 419,227.05-631,665.33-345,987.66

Finding the Fourth Proportional to 419,227.05, 631,665.33 and 345,987.66

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Solution

The fourth proportional to 419,227.05, 631,665.33 and 345,987.66 is: 521,312.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,227.05 : 631,665.33 = 345,987.66 : x
  2. Step 2: Convert to fraction form
    419,227.05/631,665.33 = 345,987.66/x
  3. Step 3: Cross multiply
    419,227.05x = 631,665.33 × 345,987.66
  4. Step 4: Simplify right side
    419,227.05x = 218,548,409,429.83
  5. Step 5: Solve for x
    x = 218,548,409,429.83/419,227.05
  6. Step 6: Final answer
    x = 521,312.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.