Finding the Fourth Proportional to 665,211.12, 917,970.84 and 378,772.08
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Solution
The fourth proportional to 665,211.12, 917,970.84 and 378,772.08 is: 522,693.79
Step by Step Solution
- Step 1: Write the proportion equation
665,211.12 : 917,970.84 = 378,772.08 : x - Step 2: Convert to fraction form
665,211.12/917,970.84 = 378,772.08/x - Step 3: Cross multiply
665,211.12x = 917,970.84 × 378,772.08 - Step 4: Simplify right side
665,211.12x = 347,701,724,446.15 - Step 5: Solve for x
x = 347,701,724,446.15/665,211.12 - Step 6: Final answer
x = 522,693.79
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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.