Finding the Fourth Proportional to 651,721.28, 976,309.12 and 309,678.08
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Solution
The fourth proportional to 651,721.28, 976,309.12 and 309,678.08 is: 463,912.32
Step by Step Solution
- Step 1: Write the proportion equation
651,721.28 : 976,309.12 = 309,678.08 : x - Step 2: Convert to fraction form
651,721.28/976,309.12 = 309,678.08/x - Step 3: Cross multiply
651,721.28x = 976,309.12 × 309,678.08 - Step 4: Simplify right side
651,721.28x = 302,341,533,768.09 - Step 5: Solve for x
x = 302,341,533,768.09/651,721.28 - Step 6: Final answer
x = 463,912.32
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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.