Finding the Fourth Proportional to 512,839.80, 707,315.40 and 478,462.68
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Solution
The fourth proportional to 512,839.80, 707,315.40 and 478,462.68 is: 659,902.02
Step by Step Solution
- Step 1: Write the proportion equation
512,839.80 : 707,315.40 = 478,462.68 : x - Step 2: Convert to fraction form
512,839.80/707,315.40 = 478,462.68/x - Step 3: Cross multiply
512,839.80x = 707,315.40 × 478,462.68 - Step 4: Simplify right side
512,839.80x = 338,424,021,889.27 - Step 5: Solve for x
x = 338,424,021,889.27/512,839.80 - Step 6: Final answer
x = 659,902.02
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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.