Finding the Fourth Proportional to 721,955.34, 996,266.07 and 399,642.66
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Solution
The fourth proportional to 721,955.34, 996,266.07 and 399,642.66 is: 551,488.99
Step by Step Solution
- Step 1: Write the proportion equation
721,955.34 : 996,266.07 = 399,642.66 : x - Step 2: Convert to fraction form
721,955.34/996,266.07 = 399,642.66/x - Step 3: Cross multiply
721,955.34x = 996,266.07 × 399,642.66 - Step 4: Simplify right side
721,955.34x = 398,150,422,282.55 - Step 5: Solve for x
x = 398,150,422,282.55/721,955.34 - Step 6: Final answer
x = 551,488.99
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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.