Home / 728,256.96-1,092,385.44-478,880.64

Finding the Fourth Proportional to 728,256.96, 1,092,385.44 and 478,880.64

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Solution

The fourth proportional to 728,256.96, 1,092,385.44 and 478,880.64 is: 718,320.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,256.96 : 1,092,385.44 = 478,880.64 : x
  2. Step 2: Convert to fraction form
    728,256.96/1,092,385.44 = 478,880.64/x
  3. Step 3: Cross multiply
    728,256.96x = 1,092,385.44 × 478,880.64
  4. Step 4: Simplify right side
    728,256.96x = 523,122,238,633.88
  5. Step 5: Solve for x
    x = 523,122,238,633.88/728,256.96
  6. Step 6: Final answer
    x = 718,320.96

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.