Home / 1,391,120.96-2,097,409.76-1,382,485.28

Finding the Fourth Proportional to 1,391,120.96, 2,097,409.76 and 1,382,485.28

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Solution

The fourth proportional to 1,391,120.96, 2,097,409.76 and 1,382,485.28 is: 2,084,389.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,120.96 : 2,097,409.76 = 1,382,485.28 : x
  2. Step 2: Convert to fraction form
    1,391,120.96/2,097,409.76 = 1,382,485.28/x
  3. Step 3: Cross multiply
    1,391,120.96x = 2,097,409.76 × 1,382,485.28
  4. Step 4: Simplify right side
    1,391,120.96x = 2,899,638,119,328.33
  5. Step 5: Solve for x
    x = 2,899,638,119,328.33/1,391,120.96
  6. Step 6: Final answer
    x = 2,084,389.64

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.