Home / 382,640.27-528,771.86-286,980.89

Finding the Fourth Proportional to 382,640.27, 528,771.86 and 286,980.89

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Solution

The fourth proportional to 382,640.27, 528,771.86 and 286,980.89 is: 396,579.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,640.27 : 528,771.86 = 286,980.89 : x
  2. Step 2: Convert to fraction form
    382,640.27/528,771.86 = 286,980.89/x
  3. Step 3: Cross multiply
    382,640.27x = 528,771.86 × 286,980.89
  4. Step 4: Simplify right side
    382,640.27x = 151,747,414,910.99
  5. Step 5: Solve for x
    x = 151,747,414,910.99/382,640.27
  6. Step 6: Final answer
    x = 396,579.84

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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.