Finding the Fourth Proportional to 878,285.42, 1,211,977.59 and 491,132.74
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Solution
The fourth proportional to 878,285.42, 1,211,977.59 and 491,132.74 is: 677,731.70
Step by Step Solution
- Step 1: Write the proportion equation
878,285.42 : 1,211,977.59 = 491,132.74 : x - Step 2: Convert to fraction form
878,285.42/1,211,977.59 = 491,132.74/x - Step 3: Cross multiply
878,285.42x = 1,211,977.59 × 491,132.74 - Step 4: Simplify right side
878,285.42x = 595,241,874,595.30 - Step 5: Solve for x
x = 595,241,874,595.30/878,285.42 - Step 6: Final answer
x = 677,731.70
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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.