Home / 789,360.64-1,089,301.44-431,664.64

Finding the Fourth Proportional to 789,360.64, 1,089,301.44 and 431,664.64

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Solution

The fourth proportional to 789,360.64, 1,089,301.44 and 431,664.64 is: 595,688.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,360.64 : 1,089,301.44 = 431,664.64 : x
  2. Step 2: Convert to fraction form
    789,360.64/1,089,301.44 = 431,664.64/x
  3. Step 3: Cross multiply
    789,360.64x = 1,089,301.44 × 431,664.64
  4. Step 4: Simplify right side
    789,360.64x = 470,212,913,949.08
  5. Step 5: Solve for x
    x = 470,212,913,949.08/789,360.64
  6. Step 6: Final answer
    x = 595,688.32

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.