Home / 1,319,452.64-1,978,906.80-644,841.44

Finding the Fourth Proportional to 1,319,452.64, 1,978,906.80 and 644,841.44

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Solution

The fourth proportional to 1,319,452.64, 1,978,906.80 and 644,841.44 is: 967,129.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,452.64 : 1,978,906.80 = 644,841.44 : x
  2. Step 2: Convert to fraction form
    1,319,452.64/1,978,906.80 = 644,841.44/x
  3. Step 3: Cross multiply
    1,319,452.64x = 1,978,906.80 × 644,841.44
  4. Step 4: Simplify right side
    1,319,452.64x = 1,276,081,110,537.79
  5. Step 5: Solve for x
    x = 1,276,081,110,537.79/1,319,452.64
  6. Step 6: Final answer
    x = 967,129.15

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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.