Finding the Fourth Proportional to 621,473.01, 857,750.46 and 389,007.75
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Solution
The fourth proportional to 621,473.01, 857,750.46 and 389,007.75 is: 536,904.37
Step by Step Solution
- Step 1: Write the proportion equation
621,473.01 : 857,750.46 = 389,007.75 : x - Step 2: Convert to fraction form
621,473.01/857,750.46 = 389,007.75/x - Step 3: Cross multiply
621,473.01x = 857,750.46 × 389,007.75 - Step 4: Simplify right side
621,473.01x = 333,671,576,506.07 - Step 5: Solve for x
x = 333,671,576,506.07/621,473.01 - Step 6: Final answer
x = 536,904.37
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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.