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Finding the Fourth Proportional to 496,860.56, 685,670.90 and 282,004.20

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Solution

The fourth proportional to 496,860.56, 685,670.90 and 282,004.20 is: 389,167.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,860.56 : 685,670.90 = 282,004.20 : x
  2. Step 2: Convert to fraction form
    496,860.56/685,670.90 = 282,004.20/x
  3. Step 3: Cross multiply
    496,860.56x = 685,670.90 × 282,004.20
  4. Step 4: Simplify right side
    496,860.56x = 193,362,073,617.78
  5. Step 5: Solve for x
    x = 193,362,073,617.78/496,860.56
  6. Step 6: Final answer
    x = 389,167.68

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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.