Finding the Fourth Proportional to 665,012.53, 917,718.36 and 378,532.64
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Solution
The fourth proportional to 665,012.53, 917,718.36 and 378,532.64 is: 522,375.65
Step by Step Solution
- Step 1: Write the proportion equation
665,012.53 : 917,718.36 = 378,532.64 : x - Step 2: Convert to fraction form
665,012.53/917,718.36 = 378,532.64/x - Step 3: Cross multiply
665,012.53x = 917,718.36 × 378,532.64 - Step 4: Simplify right side
665,012.53x = 347,386,354,462.07 - Step 5: Solve for x
x = 347,386,354,462.07/665,012.53 - Step 6: Final answer
x = 522,375.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.