Home / 728,840.40-1,006,268.04-457,280.88

Finding the Fourth Proportional to 728,840.40, 1,006,268.04 and 457,280.88

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Solution

The fourth proportional to 728,840.40, 1,006,268.04 and 457,280.88 is: 631,341.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,840.40 : 1,006,268.04 = 457,280.88 : x
  2. Step 2: Convert to fraction form
    728,840.40/1,006,268.04 = 457,280.88/x
  3. Step 3: Cross multiply
    728,840.40x = 1,006,268.04 × 457,280.88
  4. Step 4: Simplify right side
    728,840.40x = 460,147,134,847.08
  5. Step 5: Solve for x
    x = 460,147,134,847.08/728,840.40
  6. Step 6: Final answer
    x = 631,341.42

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Double scale
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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.