Home / 685,776.15-1,028,760.60-286,326.06

Finding the Fourth Proportional to 685,776.15, 1,028,760.60 and 286,326.06

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Solution

The fourth proportional to 685,776.15, 1,028,760.60 and 286,326.06 is: 429,529.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,776.15 : 1,028,760.60 = 286,326.06 : x
  2. Step 2: Convert to fraction form
    685,776.15/1,028,760.60 = 286,326.06/x
  3. Step 3: Cross multiply
    685,776.15x = 1,028,760.60 × 286,326.06
  4. Step 4: Simplify right side
    685,776.15x = 294,560,969,281.24
  5. Step 5: Solve for x
    x = 294,560,969,281.24/685,776.15
  6. Step 6: Final answer
    x = 429,529.33

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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.