Home / 820,409.38-1,228,842.56-800,332.72

Finding the Fourth Proportional to 820,409.38, 1,228,842.56 and 800,332.72

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Solution

The fourth proportional to 820,409.38, 1,228,842.56 and 800,332.72 is: 1,198,770.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,409.38 : 1,228,842.56 = 800,332.72 : x
  2. Step 2: Convert to fraction form
    820,409.38/1,228,842.56 = 800,332.72/x
  3. Step 3: Cross multiply
    820,409.38x = 1,228,842.56 × 800,332.72
  4. Step 4: Simplify right side
    820,409.38x = 983,482,908,496.56
  5. Step 5: Solve for x
    x = 983,482,908,496.56/820,409.38
  6. Step 6: Final answer
    x = 1,198,770.92

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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.