Finding the Fourth Proportional to 668,663.36, 922,755.44 and 382,189.60
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Solution
The fourth proportional to 668,663.36, 922,755.44 and 382,189.60 is: 527,421.65
Step by Step Solution
- Step 1: Write the proportion equation
668,663.36 : 922,755.44 = 382,189.60 : x - Step 2: Convert to fraction form
668,663.36/922,755.44 = 382,189.60/x - Step 3: Cross multiply
668,663.36x = 922,755.44 × 382,189.60 - Step 4: Simplify right side
668,663.36x = 352,667,532,511.42 - Step 5: Solve for x
x = 352,667,532,511.42/668,663.36 - Step 6: Final answer
x = 527,421.65
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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.