Finding the Fourth Proportional to 710,622.18, 980,654.99 and 420,338.03
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Solution
The fourth proportional to 710,622.18, 980,654.99 and 420,338.03 is: 580,064.33
Step by Step Solution
- Step 1: Write the proportion equation
710,622.18 : 980,654.99 = 420,338.03 : x - Step 2: Convert to fraction form
710,622.18/980,654.99 = 420,338.03/x - Step 3: Cross multiply
710,622.18x = 980,654.99 × 420,338.03 - Step 4: Simplify right side
710,622.18x = 412,206,579,601.31 - Step 5: Solve for x
x = 412,206,579,601.31/710,622.18 - Step 6: Final answer
x = 580,064.33
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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.