Finding the Fourth Proportional to 640,328.40, 959,455.80 and 403,246.80
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Solution
The fourth proportional to 640,328.40, 959,455.80 and 403,246.80 is: 604,217.28
Step by Step Solution
- Step 1: Write the proportion equation
640,328.40 : 959,455.80 = 403,246.80 : x - Step 2: Convert to fraction form
640,328.40/959,455.80 = 403,246.80/x - Step 3: Cross multiply
640,328.40x = 959,455.80 × 403,246.80 - Step 4: Simplify right side
640,328.40x = 386,897,481,091.44 - Step 5: Solve for x
x = 386,897,481,091.44/640,328.40 - Step 6: Final answer
x = 604,217.28
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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.