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Finding the Fourth Proportional to 628,704.26, 943,056.69 and 207,980.13

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Solution

The fourth proportional to 628,704.26, 943,056.69 and 207,980.13 is: 311,970.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,704.26 : 943,056.69 = 207,980.13 : x
  2. Step 2: Convert to fraction form
    628,704.26/943,056.69 = 207,980.13/x
  3. Step 3: Cross multiply
    628,704.26x = 943,056.69 × 207,980.13
  4. Step 4: Simplify right side
    628,704.26x = 196,137,052,983.57
  5. Step 5: Solve for x
    x = 196,137,052,983.57/628,704.26
  6. Step 6: Final answer
    x = 311,970.30

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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.