Finding the Fourth Proportional to 843,128.96, 1,163,560.56 and 499,162.40
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Solution
The fourth proportional to 843,128.96, 1,163,560.56 and 499,162.40 is: 688,869.33
Step by Step Solution
- Step 1: Write the proportion equation
843,128.96 : 1,163,560.56 = 499,162.40 : x - Step 2: Convert to fraction form
843,128.96/1,163,560.56 = 499,162.40/x - Step 3: Cross multiply
843,128.96x = 1,163,560.56 × 499,162.40 - Step 4: Simplify right side
843,128.96x = 580,805,681,674.94 - Step 5: Solve for x
x = 580,805,681,674.94/843,128.96 - Step 6: Final answer
x = 688,869.33
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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.