Finding the Fourth Proportional to 927,415.20, 1,391,122.80 and 455,023.20
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Solution
The fourth proportional to 927,415.20, 1,391,122.80 and 455,023.20 is: 682,534.80
Step by Step Solution
- Step 1: Write the proportion equation
927,415.20 : 1,391,122.80 = 455,023.20 : x - Step 2: Convert to fraction form
927,415.20/1,391,122.80 = 455,023.20/x - Step 3: Cross multiply
927,415.20x = 1,391,122.80 × 455,023.20 - Step 4: Simplify right side
927,415.20x = 632,993,148,048.96 - Step 5: Solve for x
x = 632,993,148,048.96/927,415.20 - Step 6: Final answer
x = 682,534.80
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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.