Home / 777,888.64-1,073,486.34-420,192.64

Finding the Fourth Proportional to 777,888.64, 1,073,486.34 and 420,192.64

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Solution

The fourth proportional to 777,888.64, 1,073,486.34 and 420,192.64 is: 579,865.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,888.64 : 1,073,486.34 = 420,192.64 : x
  2. Step 2: Convert to fraction form
    777,888.64/1,073,486.34 = 420,192.64/x
  3. Step 3: Cross multiply
    777,888.64x = 1,073,486.34 × 420,192.64
  4. Step 4: Simplify right side
    777,888.64x = 451,071,059,208.54
  5. Step 5: Solve for x
    x = 451,071,059,208.54/777,888.64
  6. Step 6: Final answer
    x = 579,865.85

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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.