Home / 780,138.40-1,168,895.40-667,289.20

Finding the Fourth Proportional to 780,138.40, 1,168,895.40 and 667,289.20

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Solution

The fourth proportional to 780,138.40, 1,168,895.40 and 667,289.20 is: 999,811.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,138.40 : 1,168,895.40 = 667,289.20 : x
  2. Step 2: Convert to fraction form
    780,138.40/1,168,895.40 = 667,289.20/x
  3. Step 3: Cross multiply
    780,138.40x = 1,168,895.40 × 667,289.20
  4. Step 4: Simplify right side
    780,138.40x = 779,991,276,349.68
  5. Step 5: Solve for x
    x = 779,991,276,349.68/780,138.40
  6. Step 6: Final answer
    x = 999,811.41

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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.