Finding the Fourth Proportional to 781,652.80, 1,172,479.20 and 738,107.20
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Solution
The fourth proportional to 781,652.80, 1,172,479.20 and 738,107.20 is: 1,107,160.80
Step by Step Solution
- Step 1: Write the proportion equation
781,652.80 : 1,172,479.20 = 738,107.20 : x - Step 2: Convert to fraction form
781,652.80/1,172,479.20 = 738,107.20/x - Step 3: Cross multiply
781,652.80x = 1,172,479.20 × 738,107.20 - Step 4: Simplify right side
781,652.80x = 865,415,339,370.24 - Step 5: Solve for x
x = 865,415,339,370.24/781,652.80 - Step 6: Final answer
x = 1,107,160.80
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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.