Finding the Fourth Proportional to 820,125.98, 1,131,772.19 and 457,528.21
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Solution
The fourth proportional to 820,125.98, 1,131,772.19 and 457,528.21 is: 631,387.99
Step by Step Solution
- Step 1: Write the proportion equation
820,125.98 : 1,131,772.19 = 457,528.21 : x - Step 2: Convert to fraction form
820,125.98/1,131,772.19 = 457,528.21/x - Step 3: Cross multiply
820,125.98x = 1,131,772.19 × 457,528.21 - Step 4: Simplify right side
820,125.98x = 517,817,696,271.98 - Step 5: Solve for x
x = 517,817,696,271.98/820,125.98 - Step 6: Final answer
x = 631,387.99
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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.