Home / 780,138.90-1,168,896.15-667,289.70

Finding the Fourth Proportional to 780,138.90, 1,168,896.15 and 667,289.70

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Solution

The fourth proportional to 780,138.90, 1,168,896.15 and 667,289.70 is: 999,812.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,138.90 : 1,168,896.15 = 667,289.70 : x
  2. Step 2: Convert to fraction form
    780,138.90/1,168,896.15 = 667,289.70/x
  3. Step 3: Cross multiply
    780,138.90x = 1,168,896.15 × 667,289.70
  4. Step 4: Simplify right side
    780,138.90x = 779,992,361,264.66
  5. Step 5: Solve for x
    x = 779,992,361,264.66/780,138.90
  6. Step 6: Final answer
    x = 999,812.16

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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.