Home / 663,722.91-916,016.31-377,286.03

Finding the Fourth Proportional to 663,722.91, 916,016.31 and 377,286.03

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Solution

The fourth proportional to 663,722.91, 916,016.31 and 377,286.03 is: 520,699.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,722.91 : 916,016.31 = 377,286.03 : x
  2. Step 2: Convert to fraction form
    663,722.91/916,016.31 = 377,286.03/x
  3. Step 3: Cross multiply
    663,722.91x = 916,016.31 × 377,286.03
  4. Step 4: Simplify right side
    663,722.91x = 345,600,157,015.15
  5. Step 5: Solve for x
    x = 345,600,157,015.15/663,722.91
  6. Step 6: Final answer
    x = 520,699.45

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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.