Home / 1,645,441.72-2,270,696.49-920,288.86

Finding the Fourth Proportional to 1,645,441.72, 2,270,696.49 and 920,288.86

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Solution

The fourth proportional to 1,645,441.72, 2,270,696.49 and 920,288.86 is: 1,269,991.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645,441.72 : 2,270,696.49 = 920,288.86 : x
  2. Step 2: Convert to fraction form
    1,645,441.72/2,270,696.49 = 920,288.86/x
  3. Step 3: Cross multiply
    1,645,441.72x = 2,270,696.49 × 920,288.86
  4. Step 4: Simplify right side
    1,645,441.72x = 2,089,696,684,188.10
  5. Step 5: Solve for x
    x = 2,089,696,684,188.10/1,645,441.72
  6. Step 6: Final answer
    x = 1,269,991.31

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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.