Finding the Fourth Proportional to 905,436.92, 1,249,428.16 and 497,517.68
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Solution
The fourth proportional to 905,436.92, 1,249,428.16 and 497,517.68 is: 686,533.30
Step by Step Solution
- Step 1: Write the proportion equation
905,436.92 : 1,249,428.16 = 497,517.68 : x - Step 2: Convert to fraction form
905,436.92/1,249,428.16 = 497,517.68/x - Step 3: Cross multiply
905,436.92x = 1,249,428.16 × 497,517.68 - Step 4: Simplify right side
905,436.92x = 621,612,599,489.87 - Step 5: Solve for x
x = 621,612,599,489.87/905,436.92 - Step 6: Final answer
x = 686,533.30
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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.