Finding the Fourth Proportional to 661,297.68, 991,924.56 and 287,320.68
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Solution
The fourth proportional to 661,297.68, 991,924.56 and 287,320.68 is: 430,971.48
Step by Step Solution
- Step 1: Write the proportion equation
661,297.68 : 991,924.56 = 287,320.68 : x - Step 2: Convert to fraction form
661,297.68/991,924.56 = 287,320.68/x - Step 3: Cross multiply
661,297.68x = 991,924.56 × 287,320.68 - Step 4: Simplify right side
661,297.68x = 285,000,439,087.90 - Step 5: Solve for x
x = 285,000,439,087.90/661,297.68 - Step 6: Final answer
x = 430,971.48
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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.