Home / 1,076,978.91-1,486,451.44-641,651.28

Finding the Fourth Proportional to 1,076,978.91, 1,486,451.44 and 641,651.28

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Solution

The fourth proportional to 1,076,978.91, 1,486,451.44 and 641,651.28 is: 885,610.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,076,978.91 : 1,486,451.44 = 641,651.28 : x
  2. Step 2: Convert to fraction form
    1,076,978.91/1,486,451.44 = 641,651.28/x
  3. Step 3: Cross multiply
    1,076,978.91x = 1,486,451.44 × 641,651.28
  4. Step 4: Simplify right side
    1,076,978.91x = 953,783,464,504.55
  5. Step 5: Solve for x
    x = 953,783,464,504.55/1,076,978.91
  6. Step 6: Final answer
    x = 885,610.16

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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.