Finding the Fourth Proportional to 429,862.40, 645,449.70 and 330,135.20
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Solution
The fourth proportional to 429,862.40, 645,449.70 and 330,135.20 is: 495,706.69
Step by Step Solution
- Step 1: Write the proportion equation
429,862.40 : 645,449.70 = 330,135.20 : x - Step 2: Convert to fraction form
429,862.40/645,449.70 = 330,135.20/x - Step 3: Cross multiply
429,862.40x = 645,449.70 × 330,135.20 - Step 4: Simplify right side
429,862.40x = 213,085,665,799.44 - Step 5: Solve for x
x = 213,085,665,799.44/429,862.40 - Step 6: Final answer
x = 495,706.69
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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.