Home / 638,628.20-881,313.06-352,158.44

Finding the Fourth Proportional to 638,628.20, 881,313.06 and 352,158.44

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Solution

The fourth proportional to 638,628.20, 881,313.06 and 352,158.44 is: 485,982.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,628.20 : 881,313.06 = 352,158.44 : x
  2. Step 2: Convert to fraction form
    638,628.20/881,313.06 = 352,158.44/x
  3. Step 3: Cross multiply
    638,628.20x = 881,313.06 × 352,158.44
  4. Step 4: Simplify right side
    638,628.20x = 310,361,832,361.23
  5. Step 5: Solve for x
    x = 310,361,832,361.23/638,628.20
  6. Step 6: Final answer
    x = 485,982.04

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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.