Finding the Fourth Proportional to 827,747.32, 1,142,188.79 and 478,947.68
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Solution
The fourth proportional to 827,747.32, 1,142,188.79 and 478,947.68 is: 660,888.48
Step by Step Solution
- Step 1: Write the proportion equation
827,747.32 : 1,142,188.79 = 478,947.68 : x - Step 2: Convert to fraction form
827,747.32/1,142,188.79 = 478,947.68/x - Step 3: Cross multiply
827,747.32x = 1,142,188.79 × 478,947.68 - Step 4: Simplify right side
827,747.32x = 547,048,668,697.77 - Step 5: Solve for x
x = 547,048,668,697.77/827,747.32 - Step 6: Final answer
x = 660,888.48
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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.