Finding the Fourth Proportional to 657,639.69, 986,488.26 and 208,393.68
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Solution
The fourth proportional to 657,639.69, 986,488.26 and 208,393.68 is: 312,599.62
Step by Step Solution
- Step 1: Write the proportion equation
657,639.69 : 986,488.26 = 208,393.68 : x - Step 2: Convert to fraction form
657,639.69/986,488.26 = 208,393.68/x - Step 3: Cross multiply
657,639.69x = 986,488.26 × 208,393.68 - Step 4: Simplify right side
657,639.69x = 205,577,918,778.20 - Step 5: Solve for x
x = 205,577,918,778.20/657,639.69 - Step 6: Final answer
x = 312,599.62
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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.