Finding the Fourth Proportional to 915,902.36, 1,372,119.45 and 611,378.28
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Solution
The fourth proportional to 915,902.36, 1,372,119.45 and 611,378.28 is: 915,909.89
Step by Step Solution
- Step 1: Write the proportion equation
915,902.36 : 1,372,119.45 = 611,378.28 : x - Step 2: Convert to fraction form
915,902.36/1,372,119.45 = 611,378.28/x - Step 3: Cross multiply
915,902.36x = 1,372,119.45 × 611,378.28 - Step 4: Simplify right side
915,902.36x = 838,884,029,295.55 - Step 5: Solve for x
x = 838,884,029,295.55/915,902.36 - Step 6: Final answer
x = 915,909.89
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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.