Finding the Fourth Proportional to 818,082.18, 1,128,939.93 and 478,607.94
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Solution
The fourth proportional to 818,082.18, 1,128,939.93 and 478,607.94 is: 660,471.07
Step by Step Solution
- Step 1: Write the proportion equation
818,082.18 : 1,128,939.93 = 478,607.94 : x - Step 2: Convert to fraction form
818,082.18/1,128,939.93 = 478,607.94/x - Step 3: Cross multiply
818,082.18x = 1,128,939.93 × 478,607.94 - Step 4: Simplify right side
818,082.18x = 540,319,614,281.04 - Step 5: Solve for x
x = 540,319,614,281.04/818,082.18 - Step 6: Final answer
x = 660,471.07
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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.