Finding the Fourth Proportional to 407,949,881.80, 611,924,822.70 and 327,328,313.80
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Solution
The fourth proportional to 407,949,881.80, 611,924,822.70 and 327,328,313.80 is: 490,992,470.70
Step by Step Solution
- Step 1: Write the proportion equation
407,949,881.80 : 611,924,822.70 = 327,328,313.80 : x - Step 2: Convert to fraction form
407,949,881.80/611,924,822.70 = 327,328,313.80/x - Step 3: Cross multiply
407,949,881.80x = 611,924,822.70 × 327,328,313.80 - Step 4: Simplify right side
407,949,881.80x = 200,300,320,386,754,976 - Step 5: Solve for x
x = 200,300,320,386,754,976/407,949,881.80 - Step 6: Final answer
x = 490,992,470.70
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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.