Home / 726,498.21-1,089,788.31-221,075.66

Finding the Fourth Proportional to 726,498.21, 1,089,788.31 and 221,075.66

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Solution

The fourth proportional to 726,498.21, 1,089,788.31 and 221,075.66 is: 331,625.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,498.21 : 1,089,788.31 = 221,075.66 : x
  2. Step 2: Convert to fraction form
    726,498.21/1,089,788.31 = 221,075.66/x
  3. Step 3: Cross multiply
    726,498.21x = 1,089,788.31 × 221,075.66
  4. Step 4: Simplify right side
    726,498.21x = 240,925,672,618.01
  5. Step 5: Solve for x
    x = 240,925,672,618.01/726,498.21
  6. Step 6: Final answer
    x = 331,625.97

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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.