Home / 685,991.08-1,028,986.64-286,414.32

Finding the Fourth Proportional to 685,991.08, 1,028,986.64 and 286,414.32

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Solution

The fourth proportional to 685,991.08, 1,028,986.64 and 286,414.32 is: 429,621.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,991.08 : 1,028,986.64 = 286,414.32 : x
  2. Step 2: Convert to fraction form
    685,991.08/1,028,986.64 = 286,414.32/x
  3. Step 3: Cross multiply
    685,991.08x = 1,028,986.64 × 286,414.32
  4. Step 4: Simplify right side
    685,991.08x = 294,716,508,784.69
  5. Step 5: Solve for x
    x = 294,716,508,784.69/685,991.08
  6. Step 6: Final answer
    x = 429,621.49

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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.