Finding the Fourth Proportional to 431,624.80, 646,270.80 and 338,312.80
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Solution
The fourth proportional to 431,624.80, 646,270.80 and 338,312.80 is: 506,554.96
Step by Step Solution
- Step 1: Write the proportion equation
431,624.80 : 646,270.80 = 338,312.80 : x - Step 2: Convert to fraction form
431,624.80/646,270.80 = 338,312.80/x - Step 3: Cross multiply
431,624.80x = 646,270.80 × 338,312.80 - Step 4: Simplify right side
431,624.80x = 218,641,683,906.24 - Step 5: Solve for x
x = 218,641,683,906.24/431,624.80 - Step 6: Final answer
x = 506,554.96
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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.