Finding the Fourth Proportional to 455,625.80, 683,438.70 and 429,381.80
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Solution
The fourth proportional to 455,625.80, 683,438.70 and 429,381.80 is: 644,072.70
Step by Step Solution
- Step 1: Write the proportion equation
455,625.80 : 683,438.70 = 429,381.80 : x - Step 2: Convert to fraction form
455,625.80/683,438.70 = 429,381.80/x - Step 3: Cross multiply
455,625.80x = 683,438.70 × 429,381.80 - Step 4: Simplify right side
455,625.80x = 293,456,139,195.66 - Step 5: Solve for x
x = 293,456,139,195.66/455,625.80 - Step 6: Final answer
x = 644,072.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.