Finding the Fourth Proportional to 478,336,406.70, 660,104,236.09 and 258,319,832.70
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Solution
The fourth proportional to 478,336,406.70, 660,104,236.09 and 258,319,832.70 is: 356,481,366.34
Step by Step Solution
- Step 1: Write the proportion equation
478,336,406.70 : 660,104,236.09 = 258,319,832.70 : x - Step 2: Convert to fraction form
478,336,406.70/660,104,236.09 = 258,319,832.70/x - Step 3: Cross multiply
478,336,406.70x = 660,104,236.09 × 258,319,832.70 - Step 4: Simplify right side
478,336,406.70x = 170,518,015,827,383,776 - Step 5: Solve for x
x = 170,518,015,827,383,776/478,336,406.70 - Step 6: Final answer
x = 356,481,366.34
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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.