Home / 685,964.82-946,554.84-379,965.30

Finding the Fourth Proportional to 685,964.82, 946,554.84 and 379,965.30

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Solution

The fourth proportional to 685,964.82, 946,554.84 and 379,965.30 is: 524,309.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,964.82 : 946,554.84 = 379,965.30 : x
  2. Step 2: Convert to fraction form
    685,964.82/946,554.84 = 379,965.30/x
  3. Step 3: Cross multiply
    685,964.82x = 946,554.84 × 379,965.30
  4. Step 4: Simplify right side
    685,964.82x = 359,657,993,747.05
  5. Step 5: Solve for x
    x = 359,657,993,747.05/685,964.82
  6. Step 6: Final answer
    x = 524,309.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.