Home / 789,489.62-1,089,429.46-467,143.24

Finding the Fourth Proportional to 789,489.62, 1,089,429.46 and 467,143.24

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Solution

The fourth proportional to 789,489.62, 1,089,429.46 and 467,143.24 is: 644,618.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,489.62 : 1,089,429.46 = 467,143.24 : x
  2. Step 2: Convert to fraction form
    789,489.62/1,089,429.46 = 467,143.24/x
  3. Step 3: Cross multiply
    789,489.62x = 1,089,429.46 × 467,143.24
  4. Step 4: Simplify right side
    789,489.62x = 508,919,607,695.85
  5. Step 5: Solve for x
    x = 508,919,607,695.85/789,489.62
  6. Step 6: Final answer
    x = 644,618.49

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Half scale
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Double scale
Find fourth proportional to 789,490.62, 1,089,430.84 and 467,144.24
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.