Finding the Fourth Proportional to 521,837.20, 720,132.42 and 295,482.70
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Solution
The fourth proportional to 521,837.20, 720,132.42 and 295,482.70 is: 407,764.47
Step by Step Solution
- Step 1: Write the proportion equation
521,837.20 : 720,132.42 = 295,482.70 : x - Step 2: Convert to fraction form
521,837.20/720,132.42 = 295,482.70/x - Step 3: Cross multiply
521,837.20x = 720,132.42 × 295,482.70 - Step 4: Simplify right side
521,837.20x = 212,786,671,819.13 - Step 5: Solve for x
x = 212,786,671,819.13/521,837.20 - Step 6: Final answer
x = 407,764.47
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.