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Finding the Fourth Proportional to 686,437.72, 946,233.99 and 481,914.88

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Solution

The fourth proportional to 686,437.72, 946,233.99 and 481,914.88 is: 664,305.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,437.72 : 946,233.99 = 481,914.88 : x
  2. Step 2: Convert to fraction form
    686,437.72/946,233.99 = 481,914.88/x
  3. Step 3: Cross multiply
    686,437.72x = 946,233.99 × 481,914.88
  4. Step 4: Simplify right side
    686,437.72x = 456,004,239,742.77
  5. Step 5: Solve for x
    x = 456,004,239,742.77/686,437.72
  6. Step 6: Final answer
    x = 664,305.34

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Double scale
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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.