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Finding the Fourth Proportional to 685,924.80, 946,261.08 and 444,288

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Solution

The fourth proportional to 685,924.80, 946,261.08 and 444,288 is: 612,913.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,924.80 : 946,261.08 = 444,288 : x
  2. Step 2: Convert to fraction form
    685,924.80/946,261.08 = 444,288/x
  3. Step 3: Cross multiply
    685,924.80x = 946,261.08 × 444,288
  4. Step 4: Simplify right side
    685,924.80x = 420,412,442,711.04
  5. Step 5: Solve for x
    x = 420,412,442,711.04/685,924.80
  6. Step 6: Final answer
    x = 612,913.31

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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.