Finding the Fourth Proportional to 624,609.23, 861,963.42 and 338,129.30
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Solution
The fourth proportional to 624,609.23, 861,963.42 and 338,129.30 is: 466,619.90
Step by Step Solution
- Step 1: Write the proportion equation
624,609.23 : 861,963.42 = 338,129.30 : x - Step 2: Convert to fraction form
624,609.23/861,963.42 = 338,129.30/x - Step 3: Cross multiply
624,609.23x = 861,963.42 × 338,129.30 - Step 4: Simplify right side
624,609.23x = 291,455,091,253.10 - Step 5: Solve for x
x = 291,455,091,253.10/624,609.23 - Step 6: Final answer
x = 466,619.90
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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.