Finding the Fourth Proportional to 788,643.24, 1,087,613.12 and 516,611.93
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Solution
The fourth proportional to 788,643.24, 1,087,613.12 and 516,611.93 is: 712,456.38
Step by Step Solution
- Step 1: Write the proportion equation
788,643.24 : 1,087,613.12 = 516,611.93 : x - Step 2: Convert to fraction form
788,643.24/1,087,613.12 = 516,611.93/x - Step 3: Cross multiply
788,643.24x = 1,087,613.12 × 516,611.93 - Step 4: Simplify right side
788,643.24x = 561,873,908,869.99 - Step 5: Solve for x
x = 561,873,908,869.99/788,643.24 - Step 6: Final answer
x = 712,456.38
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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.