Finding the Fourth Proportional to 455,349.70, 638,422.70 and 455,349.70
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Solution
The fourth proportional to 455,349.70, 638,422.70 and 455,349.70 is: 638,422.70
Step by Step Solution
- Step 1: Write the proportion equation
455,349.70 : 638,422.70 = 455,349.70 : x - Step 2: Convert to fraction form
455,349.70/638,422.70 = 455,349.70/x - Step 3: Cross multiply
455,349.70x = 638,422.70 × 455,349.70 - Step 4: Simplify right side
455,349.70x = 290,705,584,918.19 - Step 5: Solve for x
x = 290,705,584,918.19/455,349.70 - Step 6: Final answer
x = 638,422.70
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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.