Home / 1,219,042.35-1,828,683.78-420,218.73

Finding the Fourth Proportional to 1,219,042.35, 1,828,683.78 and 420,218.73

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Solution

The fourth proportional to 1,219,042.35, 1,828,683.78 and 420,218.73 is: 630,369.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,042.35 : 1,828,683.78 = 420,218.73 : x
  2. Step 2: Convert to fraction form
    1,219,042.35/1,828,683.78 = 420,218.73/x
  3. Step 3: Cross multiply
    1,219,042.35x = 1,828,683.78 × 420,218.73
  4. Step 4: Simplify right side
    1,219,042.35x = 768,447,175,603.20
  5. Step 5: Solve for x
    x = 768,447,175,603.20/1,219,042.35
  6. Step 6: Final answer
    x = 630,369.55

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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.