Home / 726,388.80-1,089,583.20-353,140.80

Finding the Fourth Proportional to 726,388.80, 1,089,583.20 and 353,140.80

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Solution

The fourth proportional to 726,388.80, 1,089,583.20 and 353,140.80 is: 529,711.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,388.80 : 1,089,583.20 = 353,140.80 : x
  2. Step 2: Convert to fraction form
    726,388.80/1,089,583.20 = 353,140.80/x
  3. Step 3: Cross multiply
    726,388.80x = 1,089,583.20 × 353,140.80
  4. Step 4: Simplify right side
    726,388.80x = 384,776,282,914.56
  5. Step 5: Solve for x
    x = 384,776,282,914.56/726,388.80
  6. Step 6: Final answer
    x = 529,711.20

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Double scale
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Similar ratio
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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.