Home / 726,087.40-1,089,131.10-488,141.80

Finding the Fourth Proportional to 726,087.40, 1,089,131.10 and 488,141.80

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Solution

The fourth proportional to 726,087.40, 1,089,131.10 and 488,141.80 is: 732,212.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,087.40 : 1,089,131.10 = 488,141.80 : x
  2. Step 2: Convert to fraction form
    726,087.40/1,089,131.10 = 488,141.80/x
  3. Step 3: Cross multiply
    726,087.40x = 1,089,131.10 × 488,141.80
  4. Step 4: Simplify right side
    726,087.40x = 531,650,415,589.98
  5. Step 5: Solve for x
    x = 531,650,415,589.98/726,087.40
  6. Step 6: Final answer
    x = 732,212.70

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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.