Finding the Fourth Proportional to 617,678.11, 852,404.50 and 355,888.74
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Solution
The fourth proportional to 617,678.11, 852,404.50 and 355,888.74 is: 491,131.48
Step by Step Solution
- Step 1: Write the proportion equation
617,678.11 : 852,404.50 = 355,888.74 : x - Step 2: Convert to fraction form
617,678.11/852,404.50 = 355,888.74/x - Step 3: Cross multiply
617,678.11x = 852,404.50 × 355,888.74 - Step 4: Simplify right side
617,678.11x = 303,361,163,322.87 - Step 5: Solve for x
x = 303,361,163,322.87/617,678.11 - Step 6: Final answer
x = 491,131.48
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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.