Finding the Fourth Proportional to 665,775.84, 918,720.90 and 379,239.96
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Solution
The fourth proportional to 665,775.84, 918,720.90 and 379,239.96 is: 523,322.80
Step by Step Solution
- Step 1: Write the proportion equation
665,775.84 : 918,720.90 = 379,239.96 : x - Step 2: Convert to fraction form
665,775.84/918,720.90 = 379,239.96/x - Step 3: Cross multiply
665,775.84x = 918,720.90 × 379,239.96 - Step 4: Simplify right side
665,775.84x = 348,415,677,367.16 - Step 5: Solve for x
x = 348,415,677,367.16/665,775.84 - Step 6: Final answer
x = 523,322.80
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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.