Home / 857,268,863,015.82-1,285,903,294,080.80-320,088,774,379.28

Finding the Fourth Proportional to 857,268,863,015.82, 1,285,903,294,080.80 and 320,088,774,379.28

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Solution

The fourth proportional to 857,268,863,015.82, 1,285,903,294,080.80 and 320,088,774,379.28 is: 480,133,161,403.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,268,863,015.82 : 1,285,903,294,080.80 = 320,088,774,379.28 : x
  2. Step 2: Convert to fraction form
    857,268,863,015.82/1,285,903,294,080.80 = 320,088,774,379.28/x
  3. Step 3: Cross multiply
    857,268,863,015.82x = 1,285,903,294,080.80 × 320,088,774,379.28
  4. Step 4: Simplify right side
    857,268,863,015.82x = 411,603,209,372,602,212,548,608
  5. Step 5: Solve for x
    x = 411,603,209,372,602,212,548,608/857,268,863,015.82
  6. Step 6: Final answer
    x = 480,133,161,403.54

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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.