Finding the Fourth Proportional to 931,677.11, 1,285,702.08 and 518,211.08
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Solution
The fourth proportional to 931,677.11, 1,285,702.08 and 518,211.08 is: 715,124.43
Step by Step Solution
- Step 1: Write the proportion equation
931,677.11 : 1,285,702.08 = 518,211.08 : x - Step 2: Convert to fraction form
931,677.11/1,285,702.08 = 518,211.08/x - Step 3: Cross multiply
931,677.11x = 1,285,702.08 × 518,211.08 - Step 4: Simplify right side
931,677.11x = 666,265,057,006.54 - Step 5: Solve for x
x = 666,265,057,006.54/931,677.11 - Step 6: Final answer
x = 715,124.43
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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.