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Finding the Fourth Proportional to 628,704.63, 943,057.26 and 207,980.51

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Solution

The fourth proportional to 628,704.63, 943,057.26 and 207,980.51 is: 311,970.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,704.63 : 943,057.26 = 207,980.51 : x
  2. Step 2: Convert to fraction form
    628,704.63/943,057.26 = 207,980.51/x
  3. Step 3: Cross multiply
    628,704.63x = 943,057.26 × 207,980.51
  4. Step 4: Simplify right side
    628,704.63x = 196,137,529,894.00
  5. Step 5: Solve for x
    x = 196,137,529,894.00/628,704.63
  6. Step 6: Final answer
    x = 311,970.87

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Double scale
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Similar ratio
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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.