Finding the Fourth Proportional to 640,446.92, 961,272.30 and 325,130.12
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Solution
The fourth proportional to 640,446.92, 961,272.30 and 325,130.12 is: 488,000.75
Step by Step Solution
- Step 1: Write the proportion equation
640,446.92 : 961,272.30 = 325,130.12 : x - Step 2: Convert to fraction form
640,446.92/961,272.30 = 325,130.12/x - Step 3: Cross multiply
640,446.92x = 961,272.30 × 325,130.12 - Step 4: Simplify right side
640,446.92x = 312,538,578,251.68 - Step 5: Solve for x
x = 312,538,578,251.68/640,446.92 - Step 6: Final answer
x = 488,000.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.