Finding the Fourth Proportional to 919,789.14, 1,379,220.02 and 279,970.14
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Solution
The fourth proportional to 919,789.14, 1,379,220.02 and 279,970.14 is: 419,814.07
Step by Step Solution
- Step 1: Write the proportion equation
919,789.14 : 1,379,220.02 = 279,970.14 : x - Step 2: Convert to fraction form
919,789.14/1,379,220.02 = 279,970.14/x - Step 3: Cross multiply
919,789.14x = 1,379,220.02 × 279,970.14 - Step 4: Simplify right side
919,789.14x = 386,140,415,894.03 - Step 5: Solve for x
x = 386,140,415,894.03/919,789.14 - Step 6: Final answer
x = 419,814.07
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1.5x scale
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.