Finding the Fourth Proportional to 818,518.38, 1,129,555.36 and 478,986.63
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Solution
The fourth proportional to 818,518.38, 1,129,555.36 and 478,986.63 is: 661,001.55
Step by Step Solution
- Step 1: Write the proportion equation
818,518.38 : 1,129,555.36 = 478,986.63 : x - Step 2: Convert to fraction form
818,518.38/1,129,555.36 = 478,986.63/x - Step 3: Cross multiply
818,518.38x = 1,129,555.36 × 478,986.63 - Step 4: Simplify right side
818,518.38x = 541,041,915,284.84 - Step 5: Solve for x
x = 541,041,915,284.84/818,518.38 - Step 6: Final answer
x = 661,001.55
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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.