Home / 783,865.32-1,081,964.35-511,974.78

Finding the Fourth Proportional to 783,865.32, 1,081,964.35 and 511,974.78

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Solution

The fourth proportional to 783,865.32, 1,081,964.35 and 511,974.78 is: 706,675.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,865.32 : 1,081,964.35 = 511,974.78 : x
  2. Step 2: Convert to fraction form
    783,865.32/1,081,964.35 = 511,974.78/x
  3. Step 3: Cross multiply
    783,865.32x = 1,081,964.35 × 511,974.78
  4. Step 4: Simplify right side
    783,865.32x = 553,938,460,059.09
  5. Step 5: Solve for x
    x = 553,938,460,059.09/783,865.32
  6. Step 6: Final answer
    x = 706,675.56

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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.