Finding the Fourth Proportional to 642,701.80, 964,052.70 and 476,813.80
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Solution
The fourth proportional to 642,701.80, 964,052.70 and 476,813.80 is: 715,220.70
Step by Step Solution
- Step 1: Write the proportion equation
642,701.80 : 964,052.70 = 476,813.80 : x - Step 2: Convert to fraction form
642,701.80/964,052.70 = 476,813.80/x - Step 3: Cross multiply
642,701.80x = 964,052.70 × 476,813.80 - Step 4: Simplify right side
642,701.80x = 459,673,631,287.26 - Step 5: Solve for x
x = 459,673,631,287.26/642,701.80 - Step 6: Final answer
x = 715,220.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.