Home / 728,797.90-1,005,697.78-422,850.58

Finding the Fourth Proportional to 728,797.90, 1,005,697.78 and 422,850.58

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Solution

The fourth proportional to 728,797.90, 1,005,697.78 and 422,850.58 is: 583,508.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,797.90 : 1,005,697.78 = 422,850.58 : x
  2. Step 2: Convert to fraction form
    728,797.90/1,005,697.78 = 422,850.58/x
  3. Step 3: Cross multiply
    728,797.90x = 1,005,697.78 × 422,850.58
  4. Step 4: Simplify right side
    728,797.90x = 425,259,889,577.71
  5. Step 5: Solve for x
    x = 425,259,889,577.71/728,797.90
  6. Step 6: Final answer
    x = 583,508.66

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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.