Home / 770,728.40-1,156,092.60-692,190.80

Finding the Fourth Proportional to 770,728.40, 1,156,092.60 and 692,190.80

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Solution

The fourth proportional to 770,728.40, 1,156,092.60 and 692,190.80 is: 1,038,286.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,728.40 : 1,156,092.60 = 692,190.80 : x
  2. Step 2: Convert to fraction form
    770,728.40/1,156,092.60 = 692,190.80/x
  3. Step 3: Cross multiply
    770,728.40x = 1,156,092.60 × 692,190.80
  4. Step 4: Simplify right side
    770,728.40x = 800,236,661,668.08
  5. Step 5: Solve for x
    x = 800,236,661,668.08/770,728.40
  6. Step 6: Final answer
    x = 1,038,286.20

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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.