Home / 638,611.20-881,289.60-352,141.44

Finding the Fourth Proportional to 638,611.20, 881,289.60 and 352,141.44

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Solution

The fourth proportional to 638,611.20, 881,289.60 and 352,141.44 is: 485,958.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,611.20 : 881,289.60 = 352,141.44 : x
  2. Step 2: Convert to fraction form
    638,611.20/881,289.60 = 352,141.44/x
  3. Step 3: Cross multiply
    638,611.20x = 881,289.60 × 352,141.44
  4. Step 4: Simplify right side
    638,611.20x = 310,338,588,801.02
  5. Step 5: Solve for x
    x = 310,338,588,801.02/638,611.20
  6. Step 6: Final answer
    x = 485,958.58

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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.