Home / 692,918.20-1,039,409.70-219,640.60

Finding the Fourth Proportional to 692,918.20, 1,039,409.70 and 219,640.60

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Solution

The fourth proportional to 692,918.20, 1,039,409.70 and 219,640.60 is: 329,471.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,918.20 : 1,039,409.70 = 219,640.60 : x
  2. Step 2: Convert to fraction form
    692,918.20/1,039,409.70 = 219,640.60/x
  3. Step 3: Cross multiply
    692,918.20x = 1,039,409.70 × 219,640.60
  4. Step 4: Simplify right side
    692,918.20x = 228,296,570,153.82
  5. Step 5: Solve for x
    x = 228,296,570,153.82/692,918.20
  6. Step 6: Final answer
    x = 329,471.17

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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.