Finding the Fourth Proportional to 715,921.92, 987,913.62 and 421,525.08
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Solution
The fourth proportional to 715,921.92, 987,913.62 and 421,525.08 is: 581,670.09
Step by Step Solution
- Step 1: Write the proportion equation
715,921.92 : 987,913.62 = 421,525.08 : x - Step 2: Convert to fraction form
715,921.92/987,913.62 = 421,525.08/x - Step 3: Cross multiply
715,921.92x = 987,913.62 × 421,525.08 - Step 4: Simplify right side
715,921.92x = 416,430,367,703.59 - Step 5: Solve for x
x = 416,430,367,703.59/715,921.92 - Step 6: Final answer
x = 581,670.09
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.