Finding the Fourth Proportional to 665,961.12, 919,036.36 and 379,475.06
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Solution
The fourth proportional to 665,961.12, 919,036.36 and 379,475.06 is: 523,681.29
Step by Step Solution
- Step 1: Write the proportion equation
665,961.12 : 919,036.36 = 379,475.06 : x - Step 2: Convert to fraction form
665,961.12/919,036.36 = 379,475.06/x - Step 3: Cross multiply
665,961.12x = 919,036.36 × 379,475.06 - Step 4: Simplify right side
665,961.12x = 348,751,377,853.18 - Step 5: Solve for x
x = 348,751,377,853.18/665,961.12 - Step 6: Final answer
x = 523,681.29
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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.