Finding the Fourth Proportional to 936,415.20, 1,292,257.44 and 528,534.30
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Solution
The fourth proportional to 936,415.20, 1,292,257.44 and 528,534.30 is: 729,379.85
Step by Step Solution
- Step 1: Write the proportion equation
936,415.20 : 1,292,257.44 = 528,534.30 : x - Step 2: Convert to fraction form
936,415.20/1,292,257.44 = 528,534.30/x - Step 3: Cross multiply
936,415.20x = 1,292,257.44 × 528,534.30 - Step 4: Simplify right side
936,415.20x = 683,002,381,470.19 - Step 5: Solve for x
x = 683,002,381,470.19/936,415.20 - Step 6: Final answer
x = 729,379.85
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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.