Home / 1,188,813.80-1,640,535.78-679,485.80

Finding the Fourth Proportional to 1,188,813.80, 1,640,535.78 and 679,485.80

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Solution

The fourth proportional to 1,188,813.80, 1,640,535.78 and 679,485.80 is: 937,674.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,813.80 : 1,640,535.78 = 679,485.80 : x
  2. Step 2: Convert to fraction form
    1,188,813.80/1,640,535.78 = 679,485.80/x
  3. Step 3: Cross multiply
    1,188,813.80x = 1,640,535.78 × 679,485.80
  4. Step 4: Simplify right side
    1,188,813.80x = 1,114,720,766,901.92
  5. Step 5: Solve for x
    x = 1,114,720,766,901.92/1,188,813.80
  6. Step 6: Final answer
    x = 937,674.82

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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.