Home / 939,662.88-1,296,735.69-509,943.12

Finding the Fourth Proportional to 939,662.88, 1,296,735.69 and 509,943.12

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Solution

The fourth proportional to 939,662.88, 1,296,735.69 and 509,943.12 is: 703,722.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,662.88 : 1,296,735.69 = 509,943.12 : x
  2. Step 2: Convert to fraction form
    939,662.88/1,296,735.69 = 509,943.12/x
  3. Step 3: Cross multiply
    939,662.88x = 1,296,735.69 × 509,943.12
  4. Step 4: Simplify right side
    939,662.88x = 661,261,443,573.95
  5. Step 5: Solve for x
    x = 661,261,443,573.95/939,662.88
  6. Step 6: Final answer
    x = 703,722.00

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.