Home / 1,393,792.08-1,923,199.92-820,946.31

Finding the Fourth Proportional to 1,393,792.08, 1,923,199.92 and 820,946.31

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Solution

The fourth proportional to 1,393,792.08, 1,923,199.92 and 820,946.31 is: 1,132,768.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,792.08 : 1,923,199.92 = 820,946.31 : x
  2. Step 2: Convert to fraction form
    1,393,792.08/1,923,199.92 = 820,946.31/x
  3. Step 3: Cross multiply
    1,393,792.08x = 1,923,199.92 × 820,946.31
  4. Step 4: Simplify right side
    1,393,792.08x = 1,578,843,877,716.30
  5. Step 5: Solve for x
    x = 1,578,843,877,716.30/1,393,792.08
  6. Step 6: Final answer
    x = 1,132,768.58

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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.