Finding the Fourth Proportional to 664,986.10, 917,686.68 and 378,524.63
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Solution
The fourth proportional to 664,986.10, 917,686.68 and 378,524.63 is: 522,367.33
Step by Step Solution
- Step 1: Write the proportion equation
664,986.10 : 917,686.68 = 378,524.63 : x - Step 2: Convert to fraction form
664,986.10/917,686.68 = 378,524.63/x - Step 3: Cross multiply
664,986.10x = 917,686.68 × 378,524.63 - Step 4: Simplify right side
664,986.10x = 347,367,011,002.93 - Step 5: Solve for x
x = 347,367,011,002.93/664,986.10 - Step 6: Final answer
x = 522,367.33
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1.5x scale
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.