Home / 939,669.50-1,296,744.86-509,949.72

Finding the Fourth Proportional to 939,669.50, 1,296,744.86 and 509,949.72

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Solution

The fourth proportional to 939,669.50, 1,296,744.86 and 509,949.72 is: 703,731.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,669.50 : 1,296,744.86 = 509,949.72 : x
  2. Step 2: Convert to fraction form
    939,669.50/1,296,744.86 = 509,949.72/x
  3. Step 3: Cross multiply
    939,669.50x = 1,296,744.86 × 509,949.72
  4. Step 4: Simplify right side
    939,669.50x = 661,274,678,268.44
  5. Step 5: Solve for x
    x = 661,274,678,268.44/939,669.50
  6. Step 6: Final answer
    x = 703,731.13

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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.