Finding the Fourth Proportional to 638,635.17, 881,297.68 and 352,155.18
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Solution
The fourth proportional to 638,635.17, 881,297.68 and 352,155.18 is: 485,963.75
Step by Step Solution
- Step 1: Write the proportion equation
638,635.17 : 881,297.68 = 352,155.18 : x - Step 2: Convert to fraction form
638,635.17/881,297.68 = 352,155.18/x - Step 3: Cross multiply
638,635.17x = 881,297.68 × 352,155.18 - Step 4: Simplify right side
638,635.17x = 310,353,543,133.98 - Step 5: Solve for x
x = 310,353,543,133.98/638,635.17 - Step 6: Final answer
x = 485,963.75
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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.