Finding the Fourth Proportional to 722,199.10, 996,634.14 and 399,909.19
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Solution
The fourth proportional to 722,199.10, 996,634.14 and 399,909.19 is: 551,874.34
Step by Step Solution
- Step 1: Write the proportion equation
722,199.10 : 996,634.14 = 399,909.19 : x - Step 2: Convert to fraction form
722,199.10/996,634.14 = 399,909.19/x - Step 3: Cross multiply
722,199.10x = 996,634.14 × 399,909.19 - Step 4: Simplify right side
722,199.10x = 398,563,151,653.75 - Step 5: Solve for x
x = 398,563,151,653.75/722,199.10 - Step 6: Final answer
x = 551,874.34
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1.5x scale
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.