Finding the Fourth Proportional to 728,381.68, 1,092,533.64 and 279,317.68
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Solution
The fourth proportional to 728,381.68, 1,092,533.64 and 279,317.68 is: 418,961.61
Step by Step Solution
- Step 1: Write the proportion equation
728,381.68 : 1,092,533.64 = 279,317.68 : x - Step 2: Convert to fraction form
728,381.68/1,092,533.64 = 279,317.68/x - Step 3: Cross multiply
728,381.68x = 1,092,533.64 × 279,317.68 - Step 4: Simplify right side
728,381.68x = 305,163,961,646.76 - Step 5: Solve for x
x = 305,163,961,646.76/728,381.68 - Step 6: Final answer
x = 418,961.61
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.