Finding the Fourth Proportional to 910,689.58, 1,256,861.82 and 518,317.94
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Solution
The fourth proportional to 910,689.58, 1,256,861.82 and 518,317.94 is: 715,341.47
Step by Step Solution
- Step 1: Write the proportion equation
910,689.58 : 1,256,861.82 = 518,317.94 : x - Step 2: Convert to fraction form
910,689.58/1,256,861.82 = 518,317.94/x - Step 3: Cross multiply
910,689.58x = 1,256,861.82 × 518,317.94 - Step 4: Simplify right side
910,689.58x = 651,454,023,122.74 - Step 5: Solve for x
x = 651,454,023,122.74/910,689.58 - Step 6: Final answer
x = 715,341.47
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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.