Finding the Fourth Proportional to 707,421.99, 976,262.79 and 385,137.57
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Solution
The fourth proportional to 707,421.99, 976,262.79 and 385,137.57 is: 531,500.98
Step by Step Solution
- Step 1: Write the proportion equation
707,421.99 : 976,262.79 = 385,137.57 : x - Step 2: Convert to fraction form
707,421.99/976,262.79 = 385,137.57/x - Step 3: Cross multiply
707,421.99x = 976,262.79 × 385,137.57 - Step 4: Simplify right side
707,421.99x = 375,995,478,622.02 - Step 5: Solve for x
x = 375,995,478,622.02/707,421.99 - Step 6: Final answer
x = 531,500.98
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1.5x scale
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.