Finding the Fourth Proportional to 822,921.95, 1,135,588.07 and 455,382.95
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Solution
The fourth proportional to 822,921.95, 1,135,588.07 and 455,382.95 is: 628,403.99
Step by Step Solution
- Step 1: Write the proportion equation
822,921.95 : 1,135,588.07 = 455,382.95 : x - Step 2: Convert to fraction form
822,921.95/1,135,588.07 = 455,382.95/x - Step 3: Cross multiply
822,921.95x = 1,135,588.07 × 455,382.95 - Step 4: Simplify right side
822,921.95x = 517,127,440,761.92 - Step 5: Solve for x
x = 517,127,440,761.92/822,921.95 - Step 6: Final answer
x = 628,403.99
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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.