Finding the Fourth Proportional to 1,316,293.75, 1,974,440.64 and 319,021.75
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Solution
The fourth proportional to 1,316,293.75, 1,974,440.64 and 319,021.75 is: 478,532.63
Step by Step Solution
- Step 1: Write the proportion equation
1,316,293.75 : 1,974,440.64 = 319,021.75 : x - Step 2: Convert to fraction form
1,316,293.75/1,974,440.64 = 319,021.75/x - Step 3: Cross multiply
1,316,293.75x = 1,974,440.64 × 319,021.75 - Step 4: Simplify right side
1,316,293.75x = 629,889,508,243.92 - Step 5: Solve for x
x = 629,889,508,243.92/1,316,293.75 - Step 6: Final answer
x = 478,532.63
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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.