Finding the Fourth Proportional to 1,489,492.80, 2,232,489.60 and 689,083.61
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Solution
The fourth proportional to 1,489,492.80, 2,232,489.60 and 689,083.61 is: 1,032,815.99
Step by Step Solution
- Step 1: Write the proportion equation
1,489,492.80 : 2,232,489.60 = 689,083.61 : x - Step 2: Convert to fraction form
1,489,492.80/2,232,489.60 = 689,083.61/x - Step 3: Cross multiply
1,489,492.80x = 2,232,489.60 × 689,083.61 - Step 4: Simplify right side
1,489,492.80x = 1,538,371,981,693.01 - Step 5: Solve for x
x = 1,538,371,981,693.01/1,489,492.80 - Step 6: Final answer
x = 1,032,815.99
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.