Home / 515,949.24-711,970.89-289,551

Finding the Fourth Proportional to 515,949.24, 711,970.89 and 289,551

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Solution

The fourth proportional to 515,949.24, 711,970.89 and 289,551 is: 399,558.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,949.24 : 711,970.89 = 289,551 : x
  2. Step 2: Convert to fraction form
    515,949.24/711,970.89 = 289,551/x
  3. Step 3: Cross multiply
    515,949.24x = 711,970.89 × 289,551
  4. Step 4: Simplify right side
    515,949.24x = 206,151,883,170.39
  5. Step 5: Solve for x
    x = 206,151,883,170.39/515,949.24
  6. Step 6: Final answer
    x = 399,558.46

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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.