Home / 728,904.16-1,005,912.72-422,957.44

Finding the Fourth Proportional to 728,904.16, 1,005,912.72 and 422,957.44

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Solution

The fourth proportional to 728,904.16, 1,005,912.72 and 422,957.44 is: 583,695.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,904.16 : 1,005,912.72 = 422,957.44 : x
  2. Step 2: Convert to fraction form
    728,904.16/1,005,912.72 = 422,957.44/x
  3. Step 3: Cross multiply
    728,904.16x = 1,005,912.72 × 422,957.44
  4. Step 4: Simplify right side
    728,904.16x = 425,458,268,914.64
  5. Step 5: Solve for x
    x = 425,458,268,914.64/728,904.16
  6. Step 6: Final answer
    x = 583,695.76

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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.