Home / 792,138.20-1,188,207.30-723,709.40

Finding the Fourth Proportional to 792,138.20, 1,188,207.30 and 723,709.40

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Solution

The fourth proportional to 792,138.20, 1,188,207.30 and 723,709.40 is: 1,085,564.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,138.20 : 1,188,207.30 = 723,709.40 : x
  2. Step 2: Convert to fraction form
    792,138.20/1,188,207.30 = 723,709.40/x
  3. Step 3: Cross multiply
    792,138.20x = 1,188,207.30 × 723,709.40
  4. Step 4: Simplify right side
    792,138.20x = 859,916,792,158.62
  5. Step 5: Solve for x
    x = 859,916,792,158.62/792,138.20
  6. Step 6: Final answer
    x = 1,085,564.10

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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.