Finding the Fourth Proportional to 722,207.10, 996,645.15 and 399,917.19
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Solution
The fourth proportional to 722,207.10, 996,645.15 and 399,917.19 is: 551,885.36
Step by Step Solution
- Step 1: Write the proportion equation
722,207.10 : 996,645.15 = 399,917.19 : x - Step 2: Convert to fraction form
722,207.10/996,645.15 = 399,917.19/x - Step 3: Cross multiply
722,207.10x = 996,645.15 × 399,917.19 - Step 4: Simplify right side
722,207.10x = 398,575,527,815.13 - Step 5: Solve for x
x = 398,575,527,815.13/722,207.10 - Step 6: Final answer
x = 551,885.36
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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.