Home / 812,868.82-1,220,059.77-413,808.35

Finding the Fourth Proportional to 812,868.82, 1,220,059.77 and 413,808.35

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Solution

The fourth proportional to 812,868.82, 1,220,059.77 and 413,808.35 is: 621,097.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,868.82 : 1,220,059.77 = 413,808.35 : x
  2. Step 2: Convert to fraction form
    812,868.82/1,220,059.77 = 413,808.35/x
  3. Step 3: Cross multiply
    812,868.82x = 1,220,059.77 × 413,808.35
  4. Step 4: Simplify right side
    812,868.82x = 504,870,912,673.00
  5. Step 5: Solve for x
    x = 504,870,912,673.00/812,868.82
  6. Step 6: Final answer
    x = 621,097.65

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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.