Home / 1,433,519.88-1,978,221.11-780,118.13

Finding the Fourth Proportional to 1,433,519.88, 1,978,221.11 and 780,118.13

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Solution

The fourth proportional to 1,433,519.88, 1,978,221.11 and 780,118.13 is: 1,076,543.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433,519.88 : 1,978,221.11 = 780,118.13 : x
  2. Step 2: Convert to fraction form
    1,433,519.88/1,978,221.11 = 780,118.13/x
  3. Step 3: Cross multiply
    1,433,519.88x = 1,978,221.11 × 780,118.13
  4. Step 4: Simplify right side
    1,433,519.88x = 1,543,246,139,268.03
  5. Step 5: Solve for x
    x = 1,543,246,139,268.03/1,433,519.88
  6. Step 6: Final answer
    x = 1,076,543.24

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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.