Finding the Fourth Proportional to 642,743.80, 964,115.70 and 476,855.80
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Solution
The fourth proportional to 642,743.80, 964,115.70 and 476,855.80 is: 715,283.70
Step by Step Solution
- Step 1: Write the proportion equation
642,743.80 : 964,115.70 = 476,855.80 : x - Step 2: Convert to fraction form
642,743.80/964,115.70 = 476,855.80/x - Step 3: Cross multiply
642,743.80x = 964,115.70 × 476,855.80 - Step 4: Simplify right side
642,743.80x = 459,744,163,416.06 - Step 5: Solve for x
x = 459,744,163,416.06/642,743.80 - Step 6: Final answer
x = 715,283.70
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1.5x scale
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.