Home / 525,705.60-789,076.80-259,766.40

Finding the Fourth Proportional to 525,705.60, 789,076.80 and 259,766.40

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Solution

The fourth proportional to 525,705.60, 789,076.80 and 259,766.40 is: 389,905.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,705.60 : 789,076.80 = 259,766.40 : x
  2. Step 2: Convert to fraction form
    525,705.60/789,076.80 = 259,766.40/x
  3. Step 3: Cross multiply
    525,705.60x = 789,076.80 × 259,766.40
  4. Step 4: Simplify right side
    525,705.60x = 204,975,639,659.52
  5. Step 5: Solve for x
    x = 204,975,639,659.52/525,705.60
  6. Step 6: Final answer
    x = 389,905.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.