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Finding the Fourth Proportional to 685,926.80, 946,263.84 and 444,290

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Solution

The fourth proportional to 685,926.80, 946,263.84 and 444,290 is: 612,916.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,926.80 : 946,263.84 = 444,290 : x
  2. Step 2: Convert to fraction form
    685,926.80/946,263.84 = 444,290/x
  3. Step 3: Cross multiply
    685,926.80x = 946,263.84 × 444,290
  4. Step 4: Simplify right side
    685,926.80x = 420,415,561,473.60
  5. Step 5: Solve for x
    x = 420,415,561,473.60/685,926.80
  6. Step 6: Final answer
    x = 612,916.07

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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.