Home / 638,625.20-881,308.96-352,155.44

Finding the Fourth Proportional to 638,625.20, 881,308.96 and 352,155.44

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Solution

The fourth proportional to 638,625.20, 881,308.96 and 352,155.44 is: 485,977.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,625.20 : 881,308.96 = 352,155.44 : x
  2. Step 2: Convert to fraction form
    638,625.20/881,308.96 = 352,155.44/x
  3. Step 3: Cross multiply
    638,625.20x = 881,308.96 × 352,155.44
  4. Step 4: Simplify right side
    638,625.20x = 310,357,744,584.74
  5. Step 5: Solve for x
    x = 310,357,744,584.74/638,625.20
  6. Step 6: Final answer
    x = 485,977.92

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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.