Home / 770,366.75-1,154,923.89-321,422.12

Finding the Fourth Proportional to 770,366.75, 1,154,923.89 and 321,422.12

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Solution

The fourth proportional to 770,366.75, 1,154,923.89 and 321,422.12 is: 481,871.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,366.75 : 1,154,923.89 = 321,422.12 : x
  2. Step 2: Convert to fraction form
    770,366.75/1,154,923.89 = 321,422.12/x
  3. Step 3: Cross multiply
    770,366.75x = 1,154,923.89 × 321,422.12
  4. Step 4: Simplify right side
    770,366.75x = 371,218,088,049.76
  5. Step 5: Solve for x
    x = 371,218,088,049.76/770,366.75
  6. Step 6: Final answer
    x = 481,871.90

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Double scale
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Similar ratio
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1.5x scale

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.