Home / 720,518.72-1,080,895.53-221,882.72

Finding the Fourth Proportional to 720,518.72, 1,080,895.53 and 221,882.72

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Solution

The fourth proportional to 720,518.72, 1,080,895.53 and 221,882.72 is: 332,860.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,518.72 : 1,080,895.53 = 221,882.72 : x
  2. Step 2: Convert to fraction form
    720,518.72/1,080,895.53 = 221,882.72/x
  3. Step 3: Cross multiply
    720,518.72x = 1,080,895.53 × 221,882.72
  4. Step 4: Simplify right side
    720,518.72x = 239,832,040,232.24
  5. Step 5: Solve for x
    x = 239,832,040,232.24/720,518.72
  6. Step 6: Final answer
    x = 332,860.25

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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.