Home / 726,086.40-1,089,129.60-488,140.80

Finding the Fourth Proportional to 726,086.40, 1,089,129.60 and 488,140.80

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Solution

The fourth proportional to 726,086.40, 1,089,129.60 and 488,140.80 is: 732,211.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,086.40 : 1,089,129.60 = 488,140.80 : x
  2. Step 2: Convert to fraction form
    726,086.40/1,089,129.60 = 488,140.80/x
  3. Step 3: Cross multiply
    726,086.40x = 1,089,129.60 × 488,140.80
  4. Step 4: Simplify right side
    726,086.40x = 531,648,594,247.68
  5. Step 5: Solve for x
    x = 531,648,594,247.68/726,086.40
  6. Step 6: Final answer
    x = 732,211.20

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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.