Finding the Fourth Proportional to 870,251.58, 1,305,644.63 and 415,423.20
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Solution
The fourth proportional to 870,251.58, 1,305,644.63 and 415,423.20 is: 623,262.38
Step by Step Solution
- Step 1: Write the proportion equation
870,251.58 : 1,305,644.63 = 415,423.20 : x - Step 2: Convert to fraction form
870,251.58/1,305,644.63 = 415,423.20/x - Step 3: Cross multiply
870,251.58x = 1,305,644.63 × 415,423.20 - Step 4: Simplify right side
870,251.58x = 542,395,070,257.42 - Step 5: Solve for x
x = 542,395,070,257.42/870,251.58 - Step 6: Final answer
x = 623,262.38
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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.