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Finding the Fourth Proportional to 1,203,403.15, 1,659,739.62 and 1,022,713.21

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Solution

The fourth proportional to 1,203,403.15, 1,659,739.62 and 1,022,713.21 is: 1,410,531.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203,403.15 : 1,659,739.62 = 1,022,713.21 : x
  2. Step 2: Convert to fraction form
    1,203,403.15/1,659,739.62 = 1,022,713.21/x
  3. Step 3: Cross multiply
    1,203,403.15x = 1,659,739.62 × 1,022,713.21
  4. Step 4: Simplify right side
    1,203,403.15x = 1,697,437,634,534.38
  5. Step 5: Solve for x
    x = 1,697,437,634,534.38/1,203,403.15
  6. Step 6: Final answer
    x = 1,410,531.15

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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.