Finding the Fourth Proportional to 641,818.91, 885,769.52 and 355,338.99
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Solution
The fourth proportional to 641,818.91, 885,769.52 and 355,338.99 is: 490,400.70
Step by Step Solution
- Step 1: Write the proportion equation
641,818.91 : 885,769.52 = 355,338.99 : x - Step 2: Convert to fraction form
641,818.91/885,769.52 = 355,338.99/x - Step 3: Cross multiply
641,818.91x = 885,769.52 × 355,338.99 - Step 4: Simplify right side
641,818.91x = 314,748,444,832.89 - Step 5: Solve for x
x = 314,748,444,832.89/641,818.91 - Step 6: Final answer
x = 490,400.70
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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.