Finding the Fourth Proportional to 646,087.43, 891,361.50 and 645,090.99
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Solution
The fourth proportional to 646,087.43, 891,361.50 and 645,090.99 is: 889,986.79
Step by Step Solution
- Step 1: Write the proportion equation
646,087.43 : 891,361.50 = 645,090.99 : x - Step 2: Convert to fraction form
646,087.43/891,361.50 = 645,090.99/x - Step 3: Cross multiply
646,087.43x = 891,361.50 × 645,090.99 - Step 4: Simplify right side
646,087.43x = 575,009,272,482.89 - Step 5: Solve for x
x = 575,009,272,482.89/646,087.43 - Step 6: Final answer
x = 889,986.79
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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.