Home / 878,776.07-1,212,635.52-511,321.19

Finding the Fourth Proportional to 878,776.07, 1,212,635.52 and 511,321.19

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Solution

The fourth proportional to 878,776.07, 1,212,635.52 and 511,321.19 is: 705,579.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,776.07 : 1,212,635.52 = 511,321.19 : x
  2. Step 2: Convert to fraction form
    878,776.07/1,212,635.52 = 511,321.19/x
  3. Step 3: Cross multiply
    878,776.07x = 1,212,635.52 × 511,321.19
  4. Step 4: Simplify right side
    878,776.07x = 620,046,231,059.49
  5. Step 5: Solve for x
    x = 620,046,231,059.49/878,776.07
  6. Step 6: Final answer
    x = 705,579.33

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1.5x scale

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.