Home / 430,517.88-645,378.18-190,504.56

Finding the Fourth Proportional to 430,517.88, 645,378.18 and 190,504.56

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Solution

The fourth proportional to 430,517.88, 645,378.18 and 190,504.56 is: 285,580.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,517.88 : 645,378.18 = 190,504.56 : x
  2. Step 2: Convert to fraction form
    430,517.88/645,378.18 = 190,504.56/x
  3. Step 3: Cross multiply
    430,517.88x = 645,378.18 × 190,504.56
  4. Step 4: Simplify right side
    430,517.88x = 122,947,486,214.50
  5. Step 5: Solve for x
    x = 122,947,486,214.50/430,517.88
  6. Step 6: Final answer
    x = 285,580.44

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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.