Finding the Fourth Proportional to 1,128,474.72, 1,693,003.68 and 418,705.20
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Solution
The fourth proportional to 1,128,474.72, 1,693,003.68 and 418,705.20 is: 628,165.99
Step by Step Solution
- Step 1: Write the proportion equation
1,128,474.72 : 1,693,003.68 = 418,705.20 : x - Step 2: Convert to fraction form
1,128,474.72/1,693,003.68 = 418,705.20/x - Step 3: Cross multiply
1,128,474.72x = 1,693,003.68 × 418,705.20 - Step 4: Simplify right side
1,128,474.72x = 708,869,444,435.14 - Step 5: Solve for x
x = 708,869,444,435.14/1,128,474.72 - Step 6: Final answer
x = 628,165.99
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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.