Finding the Fourth Proportional to 1,113,929.12, 1,670,902.68 and 315,236.72
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Solution
The fourth proportional to 1,113,929.12, 1,670,902.68 and 315,236.72 is: 472,857.63
Step by Step Solution
- Step 1: Write the proportion equation
1,113,929.12 : 1,670,902.68 = 315,236.72 : x - Step 2: Convert to fraction form
1,113,929.12/1,670,902.68 = 315,236.72/x - Step 3: Cross multiply
1,113,929.12x = 1,670,902.68 × 315,236.72 - Step 4: Simplify right side
1,113,929.12x = 526,729,880,282.41 - Step 5: Solve for x
x = 526,729,880,282.41/1,113,929.12 - Step 6: Final answer
x = 472,857.63
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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.