Home / 1,242,338.82-1,863,549.65-343,705.31

Finding the Fourth Proportional to 1,242,338.82, 1,863,549.65 and 343,705.31

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Solution

The fourth proportional to 1,242,338.82, 1,863,549.65 and 343,705.31 is: 515,569.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,338.82 : 1,863,549.65 = 343,705.31 : x
  2. Step 2: Convert to fraction form
    1,242,338.82/1,863,549.65 = 343,705.31/x
  3. Step 3: Cross multiply
    1,242,338.82x = 1,863,549.65 × 343,705.31
  4. Step 4: Simplify right side
    1,242,338.82x = 640,511,908,683.47
  5. Step 5: Solve for x
    x = 640,511,908,683.47/1,242,338.82
  6. Step 6: Final answer
    x = 515,569.42

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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.