Finding the Fourth Proportional to 877,999.11, 1,211,613.99 and 515,417.19
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Solution
The fourth proportional to 877,999.11, 1,211,613.99 and 515,417.19 is: 711,261.17
Step by Step Solution
- Step 1: Write the proportion equation
877,999.11 : 1,211,613.99 = 515,417.19 : x - Step 2: Convert to fraction form
877,999.11/1,211,613.99 = 515,417.19/x - Step 3: Cross multiply
877,999.11x = 1,211,613.99 × 515,417.19 - Step 4: Simplify right side
877,999.11x = 624,486,678,090.49 - Step 5: Solve for x
x = 624,486,678,090.49/877,999.11 - Step 6: Final answer
x = 711,261.17
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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.