Finding the Fourth Proportional to 429,739.23, 643,997.57 and 316,529.18
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Solution
The fourth proportional to 429,739.23, 643,997.57 and 316,529.18 is: 474,343.52
Step by Step Solution
- Step 1: Write the proportion equation
429,739.23 : 643,997.57 = 316,529.18 : x - Step 2: Convert to fraction form
429,739.23/643,997.57 = 316,529.18/x - Step 3: Cross multiply
429,739.23x = 643,997.57 × 316,529.18 - Step 4: Simplify right side
429,739.23x = 203,844,017,951.46 - Step 5: Solve for x
x = 203,844,017,951.46/429,739.23 - Step 6: Final answer
x = 474,343.52
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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.