Finding the Fourth Proportional to 478,336,203.82, 660,103,955.79 and 258,319,629.82
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Solution
The fourth proportional to 478,336,203.82, 660,103,955.79 and 258,319,629.82 is: 356,481,086.19
Step by Step Solution
- Step 1: Write the proportion equation
478,336,203.82 : 660,103,955.79 = 258,319,629.82 : x - Step 2: Convert to fraction form
478,336,203.82/660,103,955.79 = 258,319,629.82/x - Step 3: Cross multiply
478,336,203.82x = 660,103,955.79 × 258,319,629.82 - Step 4: Simplify right side
478,336,203.82x = 170,517,809,501,098,848 - Step 5: Solve for x
x = 170,517,809,501,098,848/478,336,203.82 - Step 6: Final answer
x = 356,481,086.19
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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.