Home / 1,421,171.57-1,961,328.57-809,350.22

Finding the Fourth Proportional to 1,421,171.57, 1,961,328.57 and 809,350.22

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Solution

The fourth proportional to 1,421,171.57, 1,961,328.57 and 809,350.22 is: 1,116,966.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,171.57 : 1,961,328.57 = 809,350.22 : x
  2. Step 2: Convert to fraction form
    1,421,171.57/1,961,328.57 = 809,350.22/x
  3. Step 3: Cross multiply
    1,421,171.57x = 1,961,328.57 × 809,350.22
  4. Step 4: Simplify right side
    1,421,171.57x = 1,587,401,709,621.79
  5. Step 5: Solve for x
    x = 1,587,401,709,621.79/1,421,171.57
  6. Step 6: Final answer
    x = 1,116,966.98

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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.