Home / 642,441.64-886,532.16-355,944.64

Finding the Fourth Proportional to 642,441.64, 886,532.16 and 355,944.64

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Solution

The fourth proportional to 642,441.64, 886,532.16 and 355,944.64 is: 491,182.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,441.64 : 886,532.16 = 355,944.64 : x
  2. Step 2: Convert to fraction form
    642,441.64/886,532.16 = 355,944.64/x
  3. Step 3: Cross multiply
    642,441.64x = 886,532.16 × 355,944.64
  4. Step 4: Simplify right side
    642,441.64x = 315,556,370,539.62
  5. Step 5: Solve for x
    x = 315,556,370,539.62/642,441.64
  6. Step 6: Final answer
    x = 491,182.94

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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.