Finding the Fourth Proportional to 487,645.70, 731,468.55 and 408,913.70
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Solution
The fourth proportional to 487,645.70, 731,468.55 and 408,913.70 is: 613,370.55
Step by Step Solution
- Step 1: Write the proportion equation
487,645.70 : 731,468.55 = 408,913.70 : x - Step 2: Convert to fraction form
487,645.70/731,468.55 = 408,913.70/x - Step 3: Cross multiply
487,645.70x = 731,468.55 × 408,913.70 - Step 4: Simplify right side
487,645.70x = 299,107,511,214.14 - Step 5: Solve for x
x = 299,107,511,214.14/487,645.70 - Step 6: Final answer
x = 613,370.55
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1.5x scale
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.