Finding the Fourth Proportional to 870,968.76, 1,306,117.20 and 338,419.68
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Solution
The fourth proportional to 870,968.76, 1,306,117.20 and 338,419.68 is: 507,498.99
Step by Step Solution
- Step 1: Write the proportion equation
870,968.76 : 1,306,117.20 = 338,419.68 : x - Step 2: Convert to fraction form
870,968.76/1,306,117.20 = 338,419.68/x - Step 3: Cross multiply
870,968.76x = 1,306,117.20 × 338,419.68 - Step 4: Simplify right side
870,968.76x = 442,015,764,866.50 - Step 5: Solve for x
x = 442,015,764,866.50/870,968.76 - Step 6: Final answer
x = 507,498.99
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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.