Home / 505,144.36-697,189.46-301,208.36

Finding the Fourth Proportional to 505,144.36, 697,189.46 and 301,208.36

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Solution

The fourth proportional to 505,144.36, 697,189.46 and 301,208.36 is: 415,721.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,144.36 : 697,189.46 = 301,208.36 : x
  2. Step 2: Convert to fraction form
    505,144.36/697,189.46 = 301,208.36/x
  3. Step 3: Cross multiply
    505,144.36x = 697,189.46 × 301,208.36
  4. Step 4: Simplify right side
    505,144.36x = 209,999,293,855.89
  5. Step 5: Solve for x
    x = 209,999,293,855.89/505,144.36
  6. Step 6: Final answer
    x = 415,721.35

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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.