Finding the Fourth Proportional to 879,225.36, 1,316,787.12 and 641,979.60
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Solution
The fourth proportional to 879,225.36, 1,316,787.12 and 641,979.60 is: 961,471.89
Step by Step Solution
- Step 1: Write the proportion equation
879,225.36 : 1,316,787.12 = 641,979.60 : x - Step 2: Convert to fraction form
879,225.36/1,316,787.12 = 641,979.60/x - Step 3: Cross multiply
879,225.36x = 1,316,787.12 × 641,979.60 - Step 4: Simplify right side
879,225.36x = 845,350,468,582.75 - Step 5: Solve for x
x = 845,350,468,582.75/879,225.36 - Step 6: Final answer
x = 961,471.89
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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.