Finding the Fourth Proportional to 455,204.70, 638,219.70 and 455,204.70
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Solution
The fourth proportional to 455,204.70, 638,219.70 and 455,204.70 is: 638,219.70
Step by Step Solution
- Step 1: Write the proportion equation
455,204.70 : 638,219.70 = 455,204.70 : x - Step 2: Convert to fraction form
455,204.70/638,219.70 = 455,204.70/x - Step 3: Cross multiply
455,204.70x = 638,219.70 × 455,204.70 - Step 4: Simplify right side
455,204.70x = 290,520,607,072.59 - Step 5: Solve for x
x = 290,520,607,072.59/455,204.70 - Step 6: Final answer
x = 638,219.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.