Finding the Fourth Proportional to 478,809.70, 718,214.55 and 471,811.30
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Solution
The fourth proportional to 478,809.70, 718,214.55 and 471,811.30 is: 707,716.95
Step by Step Solution
- Step 1: Write the proportion equation
478,809.70 : 718,214.55 = 471,811.30 : x - Step 2: Convert to fraction form
478,809.70/718,214.55 = 471,811.30/x - Step 3: Cross multiply
478,809.70x = 718,214.55 × 471,811.30 - Step 4: Simplify right side
478,809.70x = 338,861,740,514.42 - Step 5: Solve for x
x = 338,861,740,514.42/478,809.70 - Step 6: Final answer
x = 707,716.95
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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.