Home / 820,431.55-1,230,589-221,426.83

Finding the Fourth Proportional to 820,431.55, 1,230,589 and 221,426.83

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Solution

The fourth proportional to 820,431.55, 1,230,589 and 221,426.83 is: 332,124.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,431.55 : 1,230,589 = 221,426.83 : x
  2. Step 2: Convert to fraction form
    820,431.55/1,230,589 = 221,426.83/x
  3. Step 3: Cross multiply
    820,431.55x = 1,230,589 × 221,426.83
  4. Step 4: Simplify right side
    820,431.55x = 272,485,421,302.87
  5. Step 5: Solve for x
    x = 272,485,421,302.87/820,431.55
  6. Step 6: Final answer
    x = 332,124.50

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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.