Finding the Fourth Proportional to 393,403,234.32, 542,391,771.24 and 322,577,905.68
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Solution
The fourth proportional to 393,403,234.32, 542,391,771.24 and 322,577,905.68 is: 444,743,678.65
Step by Step Solution
- Step 1: Write the proportion equation
393,403,234.32 : 542,391,771.24 = 322,577,905.68 : x - Step 2: Convert to fraction form
393,403,234.32/542,391,771.24 = 322,577,905.68/x - Step 3: Cross multiply
393,403,234.32x = 542,391,771.24 × 322,577,905.68 - Step 4: Simplify right side
393,403,234.32x = 174,963,601,624,664,864 - Step 5: Solve for x
x = 174,963,601,624,664,864/393,403,234.32 - Step 6: Final answer
x = 444,743,678.65
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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.