Finding the Fourth Proportional to 939,405,956.40, 1,296,383,249.04 and 521,718,241.68
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Solution
The fourth proportional to 939,405,956.40, 1,296,383,249.04 and 521,718,241.68 is: 719,972,855.85
Step by Step Solution
- Step 1: Write the proportion equation
939,405,956.40 : 1,296,383,249.04 = 521,718,241.68 : x - Step 2: Convert to fraction form
939,405,956.40/1,296,383,249.04 = 521,718,241.68/x - Step 3: Cross multiply
939,405,956.40x = 1,296,383,249.04 × 521,718,241.68 - Step 4: Simplify right side
939,405,956.40x = 676,346,789,232,554,368 - Step 5: Solve for x
x = 676,346,789,232,554,368/939,405,956.40 - Step 6: Final answer
x = 719,972,855.85
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1.5x scale
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.