Home / 726,521.35-1,089,823.02-221,098.81

Finding the Fourth Proportional to 726,521.35, 1,089,823.02 and 221,098.81

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Solution

The fourth proportional to 726,521.35, 1,089,823.02 and 221,098.81 is: 331,660.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,521.35 : 1,089,823.02 = 221,098.81 : x
  2. Step 2: Convert to fraction form
    726,521.35/1,089,823.02 = 221,098.81/x
  3. Step 3: Cross multiply
    726,521.35x = 1,089,823.02 × 221,098.81
  4. Step 4: Simplify right side
    726,521.35x = 240,958,572,832.61
  5. Step 5: Solve for x
    x = 240,958,572,832.61/726,521.35
  6. Step 6: Final answer
    x = 331,660.69

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1.5x scale

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.