Finding the Fourth Proportional to 991,901.40, 1,368,837.54 and 539,202.12
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Solution
The fourth proportional to 991,901.40, 1,368,837.54 and 539,202.12 is: 744,106.32
Step by Step Solution
- Step 1: Write the proportion equation
991,901.40 : 1,368,837.54 = 539,202.12 : x - Step 2: Convert to fraction form
991,901.40/1,368,837.54 = 539,202.12/x - Step 3: Cross multiply
991,901.40x = 1,368,837.54 × 539,202.12 - Step 4: Simplify right side
991,901.40x = 738,080,103,503.59 - Step 5: Solve for x
x = 738,080,103,503.59/991,901.40 - Step 6: Final answer
x = 744,106.32
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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.