Finding the Fourth Proportional to 885,740.20, 1,328,610.30 and 324,701.80
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Solution
The fourth proportional to 885,740.20, 1,328,610.30 and 324,701.80 is: 487,052.70
Step by Step Solution
- Step 1: Write the proportion equation
885,740.20 : 1,328,610.30 = 324,701.80 : x - Step 2: Convert to fraction form
885,740.20/1,328,610.30 = 324,701.80/x - Step 3: Cross multiply
885,740.20x = 1,328,610.30 × 324,701.80 - Step 4: Simplify right side
885,740.20x = 431,402,155,908.54 - Step 5: Solve for x
x = 431,402,155,908.54/885,740.20 - Step 6: Final answer
x = 487,052.70
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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.