Home / 1,899,621.90-2,621,478.78-1,028,456.42

Finding the Fourth Proportional to 1,899,621.90, 2,621,478.78 and 1,028,456.42

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Solution

The fourth proportional to 1,899,621.90, 2,621,478.78 and 1,028,456.42 is: 1,419,270.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,899,621.90 : 2,621,478.78 = 1,028,456.42 : x
  2. Step 2: Convert to fraction form
    1,899,621.90/2,621,478.78 = 1,028,456.42/x
  3. Step 3: Cross multiply
    1,899,621.90x = 2,621,478.78 × 1,028,456.42
  4. Step 4: Simplify right side
    1,899,621.90x = 2,696,076,669,715.80
  5. Step 5: Solve for x
    x = 2,696,076,669,715.80/1,899,621.90
  6. Step 6: Final answer
    x = 1,419,270.16

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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.