Finding the Fourth Proportional to 877,768.12, 1,211,295.18 and 520,072.12
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Solution
The fourth proportional to 877,768.12, 1,211,295.18 and 520,072.12 is: 717,684.82
Step by Step Solution
- Step 1: Write the proportion equation
877,768.12 : 1,211,295.18 = 520,072.12 : x - Step 2: Convert to fraction form
877,768.12/1,211,295.18 = 520,072.12/x - Step 3: Cross multiply
877,768.12x = 1,211,295.18 × 520,072.12 - Step 4: Simplify right side
877,768.12x = 629,960,852,208.38 - Step 5: Solve for x
x = 629,960,852,208.38/877,768.12 - Step 6: Final answer
x = 717,684.82
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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.