Home / 770,350.89-1,154,900.30-321,406.23

Finding the Fourth Proportional to 770,350.89, 1,154,900.30 and 321,406.23

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Solution

The fourth proportional to 770,350.89, 1,154,900.30 and 321,406.23 is: 481,848.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,350.89 : 1,154,900.30 = 321,406.23 : x
  2. Step 2: Convert to fraction form
    770,350.89/1,154,900.30 = 321,406.23/x
  3. Step 3: Cross multiply
    770,350.89x = 1,154,900.30 × 321,406.23
  4. Step 4: Simplify right side
    770,350.89x = 371,192,149,841.84
  5. Step 5: Solve for x
    x = 371,192,149,841.84/770,350.89
  6. Step 6: Final answer
    x = 481,848.15

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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.