Home / 1,095,623.20-1,640,209.20-816,378.40

Finding the Fourth Proportional to 1,095,623.20, 1,640,209.20 and 816,378.40

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Solution

The fourth proportional to 1,095,623.20, 1,640,209.20 and 816,378.40 is: 1,222,164.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,095,623.20 : 1,640,209.20 = 816,378.40 : x
  2. Step 2: Convert to fraction form
    1,095,623.20/1,640,209.20 = 816,378.40/x
  3. Step 3: Cross multiply
    1,095,623.20x = 1,640,209.20 × 816,378.40
  4. Step 4: Simplify right side
    1,095,623.20x = 1,339,031,362,361.28
  5. Step 5: Solve for x
    x = 1,339,031,362,361.28/1,095,623.20
  6. Step 6: Final answer
    x = 1,222,164.12

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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.