Home / 485,683.36-670,588.24-405,318.56

Finding the Fourth Proportional to 485,683.36, 670,588.24 and 405,318.56

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Solution

The fourth proportional to 485,683.36, 670,588.24 and 405,318.56 is: 559,627.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,683.36 : 670,588.24 = 405,318.56 : x
  2. Step 2: Convert to fraction form
    485,683.36/670,588.24 = 405,318.56/x
  3. Step 3: Cross multiply
    485,683.36x = 670,588.24 × 405,318.56
  4. Step 4: Simplify right side
    485,683.36x = 271,801,859,789.73
  5. Step 5: Solve for x
    x = 271,801,859,789.73/485,683.36
  6. Step 6: Final answer
    x = 559,627.70

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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.