Home / 823,830.40-1,234,190.40-423,107.20

Finding the Fourth Proportional to 823,830.40, 1,234,190.40 and 423,107.20

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Solution

The fourth proportional to 823,830.40, 1,234,190.40 and 423,107.20 is: 633,862.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,830.40 : 1,234,190.40 = 423,107.20 : x
  2. Step 2: Convert to fraction form
    823,830.40/1,234,190.40 = 423,107.20/x
  3. Step 3: Cross multiply
    823,830.40x = 1,234,190.40 × 423,107.20
  4. Step 4: Simplify right side
    823,830.40x = 522,194,844,410.88
  5. Step 5: Solve for x
    x = 522,194,844,410.88/823,830.40
  6. Step 6: Final answer
    x = 633,862.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.