Home / 1,388,844.19-1,916,590.86-768,650.56

Finding the Fourth Proportional to 1,388,844.19, 1,916,590.86 and 768,650.56

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Solution

The fourth proportional to 1,388,844.19, 1,916,590.86 and 768,650.56 is: 1,060,729.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,844.19 : 1,916,590.86 = 768,650.56 : x
  2. Step 2: Convert to fraction form
    1,388,844.19/1,916,590.86 = 768,650.56/x
  3. Step 3: Cross multiply
    1,388,844.19x = 1,916,590.86 × 768,650.56
  4. Step 4: Simplify right side
    1,388,844.19x = 1,473,188,638,784.40
  5. Step 5: Solve for x
    x = 1,473,188,638,784.40/1,388,844.19
  6. Step 6: Final answer
    x = 1,060,729.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.