Finding the Fourth Proportional to 1,387,444.70, 2,079,784.65 and 638,183.90
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Solution
The fourth proportional to 1,387,444.70, 2,079,784.65 and 638,183.90 is: 956,639.99
Step by Step Solution
- Step 1: Write the proportion equation
1,387,444.70 : 2,079,784.65 = 638,183.90 : x - Step 2: Convert to fraction form
1,387,444.70/2,079,784.65 = 638,183.90/x - Step 3: Cross multiply
1,387,444.70x = 2,079,784.65 × 638,183.90 - Step 4: Simplify right side
1,387,444.70x = 1,327,285,079,097.14 - Step 5: Solve for x
x = 1,327,285,079,097.14/1,387,444.70 - Step 6: Final answer
x = 956,639.99
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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.