Finding the Fourth Proportional to 1,378,772.24, 1,902,705.61 and 775,160.24
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Solution
The fourth proportional to 1,378,772.24, 1,902,705.61 and 775,160.24 is: 1,069,721.08
Step by Step Solution
- Step 1: Write the proportion equation
1,378,772.24 : 1,902,705.61 = 775,160.24 : x - Step 2: Convert to fraction form
1,378,772.24/1,902,705.61 = 775,160.24/x - Step 3: Cross multiply
1,378,772.24x = 1,902,705.61 × 775,160.24 - Step 4: Simplify right side
1,378,772.24x = 1,474,901,733,421.15 - Step 5: Solve for x
x = 1,474,901,733,421.15/1,378,772.24 - Step 6: Final answer
x = 1,069,721.08
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1.5x scale
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.