Finding the Fourth Proportional to 639,051.09, 881,895.20 and 352,581.45
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Solution
The fourth proportional to 639,051.09, 881,895.20 and 352,581.45 is: 486,564.99
Step by Step Solution
- Step 1: Write the proportion equation
639,051.09 : 881,895.20 = 352,581.45 : x - Step 2: Convert to fraction form
639,051.09/881,895.20 = 352,581.45/x - Step 3: Cross multiply
639,051.09x = 881,895.20 × 352,581.45 - Step 4: Simplify right side
639,051.09x = 310,939,886,601.13 - Step 5: Solve for x
x = 310,939,886,601.13/639,051.09 - Step 6: Final answer
x = 486,564.99
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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.