Finding the Fourth Proportional to 713,415.79, 984,487.66 and 391,118.82
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Solution
The fourth proportional to 713,415.79, 984,487.66 and 391,118.82 is: 539,729.65
Step by Step Solution
- Step 1: Write the proportion equation
713,415.79 : 984,487.66 = 391,118.82 : x - Step 2: Convert to fraction form
713,415.79/984,487.66 = 391,118.82/x - Step 3: Cross multiply
713,415.79x = 984,487.66 × 391,118.82 - Step 4: Simplify right side
713,415.79x = 385,051,651,883.76 - Step 5: Solve for x
x = 385,051,651,883.76/713,415.79 - Step 6: Final answer
x = 539,729.65
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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.