Finding the Fourth Proportional to 786,005.10, 1,178,230.05 and 386,318.70
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Solution
The fourth proportional to 786,005.10, 1,178,230.05 and 386,318.70 is: 579,095.86
Step by Step Solution
- Step 1: Write the proportion equation
786,005.10 : 1,178,230.05 = 386,318.70 : x - Step 2: Convert to fraction form
786,005.10/1,178,230.05 = 386,318.70/x - Step 3: Cross multiply
786,005.10x = 1,178,230.05 × 386,318.70 - Step 4: Simplify right side
786,005.10x = 455,172,301,216.94 - Step 5: Solve for x
x = 455,172,301,216.94/786,005.10 - Step 6: Final answer
x = 579,095.86
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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.