Finding the Fourth Proportional to 919,295.10, 1,378,942.47 and 288,259.74
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Solution
The fourth proportional to 919,295.10, 1,378,942.47 and 288,259.74 is: 432,389.55
Step by Step Solution
- Step 1: Write the proportion equation
919,295.10 : 1,378,942.47 = 288,259.74 : x - Step 2: Convert to fraction form
919,295.10/1,378,942.47 = 288,259.74/x - Step 3: Cross multiply
919,295.10x = 1,378,942.47 × 288,259.74 - Step 4: Simplify right side
919,295.10x = 397,493,597,877.16 - Step 5: Solve for x
x = 397,493,597,877.16/919,295.10 - Step 6: Final answer
x = 432,389.55
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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.