Home / 1,384,396.80-1,910,876.16-811,560.96

Finding the Fourth Proportional to 1,384,396.80, 1,910,876.16 and 811,560.96

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Solution

The fourth proportional to 1,384,396.80, 1,910,876.16 and 811,560.96 is: 1,120,193.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,396.80 : 1,910,876.16 = 811,560.96 : x
  2. Step 2: Convert to fraction form
    1,384,396.80/1,910,876.16 = 811,560.96/x
  3. Step 3: Cross multiply
    1,384,396.80x = 1,910,876.16 × 811,560.96
  4. Step 4: Simplify right side
    1,384,396.80x = 1,550,792,490,850.71
  5. Step 5: Solve for x
    x = 1,550,792,490,850.71/1,384,396.80
  6. Step 6: Final answer
    x = 1,120,193.64

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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.