Finding the Fourth Proportional to 861,943.93, 1,189,482.56 and 499,577.97
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Solution
The fourth proportional to 861,943.93, 1,189,482.56 and 499,577.97 is: 689,417.57
Step by Step Solution
- Step 1: Write the proportion equation
861,943.93 : 1,189,482.56 = 499,577.97 : x - Step 2: Convert to fraction form
861,943.93/1,189,482.56 = 499,577.97/x - Step 3: Cross multiply
861,943.93x = 1,189,482.56 × 499,577.97 - Step 4: Simplify right side
861,943.93x = 594,239,286,511.29 - Step 5: Solve for x
x = 594,239,286,511.29/861,943.93 - Step 6: Final answer
x = 689,417.57
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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.