Finding the Fourth Proportional to 812,892.69, 1,121,855.12 and 450,350.05
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Solution
The fourth proportional to 812,892.69, 1,121,855.12 and 450,350.05 is: 621,518.09
Step by Step Solution
- Step 1: Write the proportion equation
812,892.69 : 1,121,855.12 = 450,350.05 : x - Step 2: Convert to fraction form
812,892.69/1,121,855.12 = 450,350.05/x - Step 3: Cross multiply
812,892.69x = 1,121,855.12 × 450,350.05 - Step 4: Simplify right side
812,892.69x = 505,227,509,384.76 - Step 5: Solve for x
x = 505,227,509,384.76/812,892.69 - Step 6: Final answer
x = 621,518.09
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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.