Home / 820,429.02-1,230,643.53-221,389.22

Finding the Fourth Proportional to 820,429.02, 1,230,643.53 and 221,389.22

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Solution

The fourth proportional to 820,429.02, 1,230,643.53 and 221,389.22 is: 332,083.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,429.02 : 1,230,643.53 = 221,389.22 : x
  2. Step 2: Convert to fraction form
    820,429.02/1,230,643.53 = 221,389.22/x
  3. Step 3: Cross multiply
    820,429.02x = 1,230,643.53 × 221,389.22
  4. Step 4: Simplify right side
    820,429.02x = 272,451,211,891.51
  5. Step 5: Solve for x
    x = 272,451,211,891.51/820,429.02
  6. Step 6: Final answer
    x = 332,083.83

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Similar ratio
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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.