Home / 2,190,406.72-3,022,672.80-1,223,521.60

Finding the Fourth Proportional to 2,190,406.72, 3,022,672.80 and 1,223,521.60

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Solution

The fourth proportional to 2,190,406.72, 3,022,672.80 and 1,223,521.60 is: 1,688,410.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190,406.72 : 3,022,672.80 = 1,223,521.60 : x
  2. Step 2: Convert to fraction form
    2,190,406.72/3,022,672.80 = 1,223,521.60/x
  3. Step 3: Cross multiply
    2,190,406.72x = 3,022,672.80 × 1,223,521.60
  4. Step 4: Simplify right side
    2,190,406.72x = 3,698,305,460,532.48
  5. Step 5: Solve for x
    x = 3,698,305,460,532.48/2,190,406.72
  6. Step 6: Final answer
    x = 1,688,410.39

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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.