Finding the Fourth Proportional to 1,578,276.95, 2,178,045.18 and 889,981.88
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Solution
The fourth proportional to 1,578,276.95, 2,178,045.18 and 889,981.88 is: 1,228,187.95
Step by Step Solution
- Step 1: Write the proportion equation
1,578,276.95 : 2,178,045.18 = 889,981.88 : x - Step 2: Convert to fraction form
1,578,276.95/2,178,045.18 = 889,981.88/x - Step 3: Cross multiply
1,578,276.95x = 2,178,045.18 × 889,981.88 - Step 4: Simplify right side
1,578,276.95x = 1,938,420,733,131.11 - Step 5: Solve for x
x = 1,938,420,733,131.11/1,578,276.95 - Step 6: Final answer
x = 1,228,187.95
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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.