Finding the Fourth Proportional to 818,555.87, 1,129,641.13 and 455,979.63
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Solution
The fourth proportional to 818,555.87, 1,129,641.13 and 455,979.63 is: 629,270.84
Step by Step Solution
- Step 1: Write the proportion equation
818,555.87 : 1,129,641.13 = 455,979.63 : x - Step 2: Convert to fraction form
818,555.87/1,129,641.13 = 455,979.63/x - Step 3: Cross multiply
818,555.87x = 1,129,641.13 × 455,979.63 - Step 4: Simplify right side
818,555.87x = 515,093,341,666.08 - Step 5: Solve for x
x = 515,093,341,666.08/818,555.87 - Step 6: Final answer
x = 629,270.84
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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.