Home / 1,991,285.54-2,747,928.44-1,216,913.34

Finding the Fourth Proportional to 1,991,285.54, 2,747,928.44 and 1,216,913.34

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Solution

The fourth proportional to 1,991,285.54, 2,747,928.44 and 1,216,913.34 is: 1,679,312.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,285.54 : 2,747,928.44 = 1,216,913.34 : x
  2. Step 2: Convert to fraction form
    1,991,285.54/2,747,928.44 = 1,216,913.34/x
  3. Step 3: Cross multiply
    1,991,285.54x = 2,747,928.44 × 1,216,913.34
  4. Step 4: Simplify right side
    1,991,285.54x = 3,343,990,769,916.82
  5. Step 5: Solve for x
    x = 3,343,990,769,916.82/1,991,285.54
  6. Step 6: Final answer
    x = 1,679,312.54

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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.