Finding the Fourth Proportional to 686,838.06, 947,893.28 and 381,013.05
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Solution
The fourth proportional to 686,838.06, 947,893.28 and 381,013.05 is: 525,829.49
Step by Step Solution
- Step 1: Write the proportion equation
686,838.06 : 947,893.28 = 381,013.05 : x - Step 2: Convert to fraction form
686,838.06/947,893.28 = 381,013.05/x - Step 3: Cross multiply
686,838.06x = 947,893.28 × 381,013.05 - Step 4: Simplify right side
686,838.06x = 361,159,707,782.24 - Step 5: Solve for x
x = 361,159,707,782.24/686,838.06 - Step 6: Final answer
x = 525,829.49
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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.