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Finding the Fourth Proportional to 496,989.12, 685,873.78 and 374,261.78

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Solution

The fourth proportional to 496,989.12, 685,873.78 and 374,261.78 is: 516,502.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,989.12 : 685,873.78 = 374,261.78 : x
  2. Step 2: Convert to fraction form
    496,989.12/685,873.78 = 374,261.78/x
  3. Step 3: Cross multiply
    496,989.12x = 685,873.78 × 374,261.78
  4. Step 4: Simplify right side
    496,989.12x = 256,696,341,758.13
  5. Step 5: Solve for x
    x = 256,696,341,758.13/496,989.12
  6. Step 6: Final answer
    x = 516,502.94

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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.