Finding the Fourth Proportional to 722,214.38, 996,643.58 and 399,917.55
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Solution
The fourth proportional to 722,214.38, 996,643.58 and 399,917.55 is: 551,879.43
Step by Step Solution
- Step 1: Write the proportion equation
722,214.38 : 996,643.58 = 399,917.55 : x - Step 2: Convert to fraction form
722,214.38/996,643.58 = 399,917.55/x - Step 3: Cross multiply
722,214.38x = 996,643.58 × 399,917.55 - Step 4: Simplify right side
722,214.38x = 398,575,256,737.24 - Step 5: Solve for x
x = 398,575,256,737.24/722,214.38 - Step 6: Final answer
x = 551,879.43
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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.