Finding the Fourth Proportional to 638,639.18, 881,303.19 and 352,159.19
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Solution
The fourth proportional to 638,639.18, 881,303.19 and 352,159.19 is: 485,969.27
Step by Step Solution
- Step 1: Write the proportion equation
638,639.18 : 881,303.19 = 352,159.19 : x - Step 2: Convert to fraction form
638,639.18/881,303.19 = 352,159.19/x - Step 3: Cross multiply
638,639.18x = 881,303.19 × 352,159.19 - Step 4: Simplify right side
638,639.18x = 310,359,017,534.82 - Step 5: Solve for x
x = 310,359,017,534.82/638,639.18 - Step 6: Final answer
x = 485,969.27
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1.5x scale
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.