Home / 939,112.38-1,295,940.06-509,378.22

Finding the Fourth Proportional to 939,112.38, 1,295,940.06 and 509,378.22

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Solution

The fourth proportional to 939,112.38, 1,295,940.06 and 509,378.22 is: 702,922.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,112.38 : 1,295,940.06 = 509,378.22 : x
  2. Step 2: Convert to fraction form
    939,112.38/1,295,940.06 = 509,378.22/x
  3. Step 3: Cross multiply
    939,112.38x = 1,295,940.06 × 509,378.22
  4. Step 4: Simplify right side
    939,112.38x = 660,123,640,989.49
  5. Step 5: Solve for x
    x = 660,123,640,989.49/939,112.38
  6. Step 6: Final answer
    x = 702,922.95

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1.5x scale

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.