Home / 685,731.76-1,028,761.84-286,150.24

Finding the Fourth Proportional to 685,731.76, 1,028,761.84 and 286,150.24

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Solution

The fourth proportional to 685,731.76, 1,028,761.84 and 286,150.24 is: 429,293.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,731.76 : 1,028,761.84 = 286,150.24 : x
  2. Step 2: Convert to fraction form
    685,731.76/1,028,761.84 = 286,150.24/x
  3. Step 3: Cross multiply
    685,731.76x = 1,028,761.84 × 286,150.24
  4. Step 4: Simplify right side
    685,731.76x = 294,380,447,418.84
  5. Step 5: Solve for x
    x = 294,380,447,418.84/685,731.76
  6. Step 6: Final answer
    x = 429,293.88

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1.5x scale

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.