Finding the Fourth Proportional to 812,531.79, 1,121,292.86 and 449,955.23
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Solution
The fourth proportional to 812,531.79, 1,121,292.86 and 449,955.23 is: 620,937.65
Step by Step Solution
- Step 1: Write the proportion equation
812,531.79 : 1,121,292.86 = 449,955.23 : x - Step 2: Convert to fraction form
812,531.79/1,121,292.86 = 449,955.23/x - Step 3: Cross multiply
812,531.79x = 1,121,292.86 × 449,955.23 - Step 4: Simplify right side
812,531.79x = 504,531,578,862.42 - Step 5: Solve for x
x = 504,531,578,862.42/812,531.79 - Step 6: Final answer
x = 620,937.65
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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.