Home / 639,107.76-881,968.56-352,628.40

Finding the Fourth Proportional to 639,107.76, 881,968.56 and 352,628.40

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Solution

The fourth proportional to 639,107.76, 881,968.56 and 352,628.40 is: 486,627.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,107.76 : 881,968.56 = 352,628.40 : x
  2. Step 2: Convert to fraction form
    639,107.76/881,968.56 = 352,628.40/x
  3. Step 3: Cross multiply
    639,107.76x = 881,968.56 × 352,628.40
  4. Step 4: Simplify right side
    639,107.76x = 311,007,162,163.10
  5. Step 5: Solve for x
    x = 311,007,162,163.10/639,107.76
  6. Step 6: Final answer
    x = 486,627.11

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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.