Home / 511,467.11-705,686.14-290,701.34

Finding the Fourth Proportional to 511,467.11, 705,686.14 and 290,701.34

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Solution

The fourth proportional to 511,467.11, 705,686.14 and 290,701.34 is: 401,089.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,467.11 : 705,686.14 = 290,701.34 : x
  2. Step 2: Convert to fraction form
    511,467.11/705,686.14 = 290,701.34/x
  3. Step 3: Cross multiply
    511,467.11x = 705,686.14 × 290,701.34
  4. Step 4: Simplify right side
    511,467.11x = 205,143,906,517.43
  5. Step 5: Solve for x
    x = 205,143,906,517.43/511,467.11
  6. Step 6: Final answer
    x = 401,089.15

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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.