Finding the Fourth Proportional to 5,379,687.60, 8,085,277.80 and 5,285,209.20
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Solution
The fourth proportional to 5,379,687.60, 8,085,277.80 and 5,285,209.20 is: 7,943,283.66
Step by Step Solution
- Step 1: Write the proportion equation
5,379,687.60 : 8,085,277.80 = 5,285,209.20 : x - Step 2: Convert to fraction form
5,379,687.60/8,085,277.80 = 5,285,209.20/x - Step 3: Cross multiply
5,379,687.60x = 8,085,277.80 × 5,285,209.20 - Step 4: Simplify right side
5,379,687.60x = 42,732,384,613,115.76 - Step 5: Solve for x
x = 42,732,384,613,115.76/5,379,687.60 - Step 6: Final answer
x = 7,943,283.66
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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.