Finding the Fourth Proportional to 812,420.16, 1,218,879.36 and 363,518.88
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Solution
The fourth proportional to 812,420.16, 1,218,879.36 and 363,518.88 is: 545,389.79
Step by Step Solution
- Step 1: Write the proportion equation
812,420.16 : 1,218,879.36 = 363,518.88 : x - Step 2: Convert to fraction form
812,420.16/1,218,879.36 = 363,518.88/x - Step 3: Cross multiply
812,420.16x = 1,218,879.36 × 363,518.88 - Step 4: Simplify right side
812,420.16x = 443,085,659,802.32 - Step 5: Solve for x
x = 443,085,659,802.32/812,420.16 - Step 6: Final answer
x = 545,389.79
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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.