Home / 777,731.30-1,073,268.95-420,035.30

Finding the Fourth Proportional to 777,731.30, 1,073,268.95 and 420,035.30

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Solution

The fourth proportional to 777,731.30, 1,073,268.95 and 420,035.30 is: 579,648.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,731.30 : 1,073,268.95 = 420,035.30 : x
  2. Step 2: Convert to fraction form
    777,731.30/1,073,268.95 = 420,035.30/x
  3. Step 3: Cross multiply
    777,731.30x = 1,073,268.95 × 420,035.30
  4. Step 4: Simplify right side
    777,731.30x = 450,810,845,393.94
  5. Step 5: Solve for x
    x = 450,810,845,393.94/777,731.30
  6. Step 6: Final answer
    x = 579,648.58

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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.