Home / 1,242,138.06-1,863,103.21-343,590.89

Finding the Fourth Proportional to 1,242,138.06, 1,863,103.21 and 343,590.89

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Solution

The fourth proportional to 1,242,138.06, 1,863,103.21 and 343,590.89 is: 515,357.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,138.06 : 1,863,103.21 = 343,590.89 : x
  2. Step 2: Convert to fraction form
    1,242,138.06/1,863,103.21 = 343,590.89/x
  3. Step 3: Cross multiply
    1,242,138.06x = 1,863,103.21 × 343,590.89
  4. Step 4: Simplify right side
    1,242,138.06x = 640,145,290,085.76
  5. Step 5: Solve for x
    x = 640,145,290,085.76/1,242,138.06
  6. Step 6: Final answer
    x = 515,357.60

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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.