Finding the Fourth Proportional to 822,078.78, 1,232,370.84 and 316,317.18
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Solution
The fourth proportional to 822,078.78, 1,232,370.84 and 316,317.18 is: 474,188.21
Step by Step Solution
- Step 1: Write the proportion equation
822,078.78 : 1,232,370.84 = 316,317.18 : x - Step 2: Convert to fraction form
822,078.78/1,232,370.84 = 316,317.18/x - Step 3: Cross multiply
822,078.78x = 1,232,370.84 × 316,317.18 - Step 4: Simplify right side
822,078.78x = 389,820,068,823.03 - Step 5: Solve for x
x = 389,820,068,823.03/822,078.78 - Step 6: Final answer
x = 474,188.21
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.