Home / 501,001.21-691,410.23-297,172.81

Finding the Fourth Proportional to 501,001.21, 691,410.23 and 297,172.81

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Solution

The fourth proportional to 501,001.21, 691,410.23 and 297,172.81 is: 410,115.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,001.21 : 691,410.23 = 297,172.81 : x
  2. Step 2: Convert to fraction form
    501,001.21/691,410.23 = 297,172.81/x
  3. Step 3: Cross multiply
    501,001.21x = 691,410.23 × 297,172.81
  4. Step 4: Simplify right side
    501,001.21x = 205,468,320,911.85
  5. Step 5: Solve for x
    x = 205,468,320,911.85/501,001.21
  6. Step 6: Final answer
    x = 410,115.42

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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.