Home / 1,421,172.58-1,961,329.96-809,351.22

Finding the Fourth Proportional to 1,421,172.58, 1,961,329.96 and 809,351.22

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Solution

The fourth proportional to 1,421,172.58, 1,961,329.96 and 809,351.22 is: 1,116,968.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,172.58 : 1,961,329.96 = 809,351.22 : x
  2. Step 2: Convert to fraction form
    1,421,172.58/1,961,329.96 = 809,351.22/x
  3. Step 3: Cross multiply
    1,421,172.58x = 1,961,329.96 × 809,351.22
  4. Step 4: Simplify right side
    1,421,172.58x = 1,587,404,795,948.55
  5. Step 5: Solve for x
    x = 1,587,404,795,948.55/1,421,172.58
  6. Step 6: Final answer
    x = 1,116,968.35

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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.