Home / 1,290,116.90-1,935,181.53-391,566.44

Finding the Fourth Proportional to 1,290,116.90, 1,935,181.53 and 391,566.44

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Solution

The fourth proportional to 1,290,116.90, 1,935,181.53 and 391,566.44 is: 587,351.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,116.90 : 1,935,181.53 = 391,566.44 : x
  2. Step 2: Convert to fraction form
    1,290,116.90/1,935,181.53 = 391,566.44/x
  3. Step 3: Cross multiply
    1,290,116.90x = 1,935,181.53 × 391,566.44
  4. Step 4: Simplify right side
    1,290,116.90x = 757,752,142,455.85
  5. Step 5: Solve for x
    x = 757,752,142,455.85/1,290,116.90
  6. Step 6: Final answer
    x = 587,351.54

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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.