Finding the Fourth Proportional to 429,394.24, 644,475.84 and 315,685.36
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Solution
The fourth proportional to 429,394.24, 644,475.84 and 315,685.36 is: 473,810.70
Step by Step Solution
- Step 1: Write the proportion equation
429,394.24 : 644,475.84 = 315,685.36 : x - Step 2: Convert to fraction form
429,394.24/644,475.84 = 315,685.36/x - Step 3: Cross multiply
429,394.24x = 644,475.84 × 315,685.36 - Step 4: Simplify right side
429,394.24x = 203,451,587,561.70 - Step 5: Solve for x
x = 203,451,587,561.70/429,394.24 - Step 6: Final answer
x = 473,810.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.