Finding the Fourth Proportional to 478,550.79, 660,284.55 and 315,189.99
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Solution
The fourth proportional to 478,550.79, 660,284.55 and 315,189.99 is: 434,886.09
Step by Step Solution
- Step 1: Write the proportion equation
478,550.79 : 660,284.55 = 315,189.99 : x - Step 2: Convert to fraction form
478,550.79/660,284.55 = 315,189.99/x - Step 3: Cross multiply
478,550.79x = 660,284.55 × 315,189.99 - Step 4: Simplify right side
478,550.79x = 208,115,080,711.66 - Step 5: Solve for x
x = 208,115,080,711.66/478,550.79 - Step 6: Final answer
x = 434,886.09
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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.