Home / 685,553.90-1,028,426.61-286,103.21

Finding the Fourth Proportional to 685,553.90, 1,028,426.61 and 286,103.21

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Solution

The fourth proportional to 685,553.90, 1,028,426.61 and 286,103.21 is: 429,194.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,553.90 : 1,028,426.61 = 286,103.21 : x
  2. Step 2: Convert to fraction form
    685,553.90/1,028,426.61 = 286,103.21/x
  3. Step 3: Cross multiply
    685,553.90x = 1,028,426.61 × 286,103.21
  4. Step 4: Simplify right side
    685,553.90x = 294,236,149,228.29
  5. Step 5: Solve for x
    x = 294,236,149,228.29/685,553.90
  6. Step 6: Final answer
    x = 429,194.77

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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.