Finding the Fourth Proportional to 665,212.12, 917,972.22 and 378,773.08
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Solution
The fourth proportional to 665,212.12, 917,972.22 and 378,773.08 is: 522,695.17
Step by Step Solution
- Step 1: Write the proportion equation
665,212.12 : 917,972.22 = 378,773.08 : x - Step 2: Convert to fraction form
665,212.12/917,972.22 = 378,773.08/x - Step 3: Cross multiply
665,212.12x = 917,972.22 × 378,773.08 - Step 4: Simplify right side
665,212.12x = 347,703,165,123.84 - Step 5: Solve for x
x = 347,703,165,123.84/665,212.12 - Step 6: Final answer
x = 522,695.17
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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.