Home / 1,019,801.21-1,529,876.09-420,434.73

Finding the Fourth Proportional to 1,019,801.21, 1,529,876.09 and 420,434.73

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Solution

The fourth proportional to 1,019,801.21, 1,529,876.09 and 420,434.73 is: 630,723.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019,801.21 : 1,529,876.09 = 420,434.73 : x
  2. Step 2: Convert to fraction form
    1,019,801.21/1,529,876.09 = 420,434.73/x
  3. Step 3: Cross multiply
    1,019,801.21x = 1,529,876.09 × 420,434.73
  4. Step 4: Simplify right side
    1,019,801.21x = 643,213,036,146.66
  5. Step 5: Solve for x
    x = 643,213,036,146.66/1,019,801.21
  6. Step 6: Final answer
    x = 630,723.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.