Home / 1,450,128.57-2,001,121.77-805,589.28

Finding the Fourth Proportional to 1,450,128.57, 2,001,121.77 and 805,589.28

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Solution

The fourth proportional to 1,450,128.57, 2,001,121.77 and 805,589.28 is: 1,111,682.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,450,128.57 : 2,001,121.77 = 805,589.28 : x
  2. Step 2: Convert to fraction form
    1,450,128.57/2,001,121.77 = 805,589.28/x
  3. Step 3: Cross multiply
    1,450,128.57x = 2,001,121.77 × 805,589.28
  4. Step 4: Simplify right side
    1,450,128.57x = 1,612,082,245,886.63
  5. Step 5: Solve for x
    x = 1,612,082,245,886.63/1,450,128.57
  6. Step 6: Final answer
    x = 1,111,682.29

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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.