Home / 770,640.40-1,155,960.60-692,102.80

Finding the Fourth Proportional to 770,640.40, 1,155,960.60 and 692,102.80

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Solution

The fourth proportional to 770,640.40, 1,155,960.60 and 692,102.80 is: 1,038,154.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,640.40 : 1,155,960.60 = 692,102.80 : x
  2. Step 2: Convert to fraction form
    770,640.40/1,155,960.60 = 692,102.80/x
  3. Step 3: Cross multiply
    770,640.40x = 1,155,960.60 × 692,102.80
  4. Step 4: Simplify right side
    770,640.40x = 800,043,567,949.68
  5. Step 5: Solve for x
    x = 800,043,567,949.68/770,640.40
  6. Step 6: Final answer
    x = 1,038,154.20

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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.