Finding the Fourth Proportional to 1,028,972.16, 1,543,821.12 and 319,178.88
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Solution
The fourth proportional to 1,028,972.16, 1,543,821.12 and 319,178.88 is: 478,880.88
Step by Step Solution
- Step 1: Write the proportion equation
1,028,972.16 : 1,543,821.12 = 319,178.88 : x - Step 2: Convert to fraction form
1,028,972.16/1,543,821.12 = 319,178.88/x - Step 3: Cross multiply
1,028,972.16x = 1,543,821.12 × 319,178.88 - Step 4: Simplify right side
1,028,972.16x = 492,755,096,001.95 - Step 5: Solve for x
x = 492,755,096,001.95/1,028,972.16 - Step 6: Final answer
x = 478,880.88
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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.