Finding the Fourth Proportional to 457,149.60, 638,434.80 and 457,149.60
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Solution
The fourth proportional to 457,149.60, 638,434.80 and 457,149.60 is: 638,434.80
Step by Step Solution
- Step 1: Write the proportion equation
457,149.60 : 638,434.80 = 457,149.60 : x - Step 2: Convert to fraction form
457,149.60/638,434.80 = 457,149.60/x - Step 3: Cross multiply
457,149.60x = 638,434.80 × 457,149.60 - Step 4: Simplify right side
457,149.60x = 291,860,213,446.08 - Step 5: Solve for x
x = 291,860,213,446.08/457,149.60 - Step 6: Final answer
x = 638,434.80
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1.5x scale
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.