Home / 641,712.36-885,569.62-355,226.30

Finding the Fourth Proportional to 641,712.36, 885,569.62 and 355,226.30

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Solution

The fourth proportional to 641,712.36, 885,569.62 and 355,226.30 is: 490,215.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,712.36 : 885,569.62 = 355,226.30 : x
  2. Step 2: Convert to fraction form
    641,712.36/885,569.62 = 355,226.30/x
  3. Step 3: Cross multiply
    641,712.36x = 885,569.62 × 355,226.30
  4. Step 4: Simplify right side
    641,712.36x = 314,577,619,505.01
  5. Step 5: Solve for x
    x = 314,577,619,505.01/641,712.36
  6. Step 6: Final answer
    x = 490,215.93

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1.5x scale

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.