Finding the Fourth Proportional to 659,728.32, 910,421.28 and 357,915.84
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Solution
The fourth proportional to 659,728.32, 910,421.28 and 357,915.84 is: 493,921.80
Step by Step Solution
- Step 1: Write the proportion equation
659,728.32 : 910,421.28 = 357,915.84 : x - Step 2: Convert to fraction form
659,728.32/910,421.28 = 357,915.84/x - Step 3: Cross multiply
659,728.32x = 910,421.28 × 357,915.84 - Step 4: Simplify right side
659,728.32x = 325,854,197,185.08 - Step 5: Solve for x
x = 325,854,197,185.08/659,728.32 - Step 6: Final answer
x = 493,921.80
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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.