Home / 726,087.60-1,089,131.40-693,428.40

Finding the Fourth Proportional to 726,087.60, 1,089,131.40 and 693,428.40

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Solution

The fourth proportional to 726,087.60, 1,089,131.40 and 693,428.40 is: 1,040,142.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,087.60 : 1,089,131.40 = 693,428.40 : x
  2. Step 2: Convert to fraction form
    726,087.60/1,089,131.40 = 693,428.40/x
  3. Step 3: Cross multiply
    726,087.60x = 1,089,131.40 × 693,428.40
  4. Step 4: Simplify right side
    726,087.60x = 755,234,644,091.76
  5. Step 5: Solve for x
    x = 755,234,644,091.76/726,087.60
  6. Step 6: Final answer
    x = 1,040,142.60

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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.