Finding the Fourth Proportional to 870,873.70, 1,306,392.99 and 338,435.79
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Solution
The fourth proportional to 870,873.70, 1,306,392.99 and 338,435.79 is: 507,685.72
Step by Step Solution
- Step 1: Write the proportion equation
870,873.70 : 1,306,392.99 = 338,435.79 : x - Step 2: Convert to fraction form
870,873.70/1,306,392.99 = 338,435.79/x - Step 3: Cross multiply
870,873.70x = 1,306,392.99 × 338,435.79 - Step 4: Simplify right side
870,873.70x = 442,130,143,621.11 - Step 5: Solve for x
x = 442,130,143,621.11/870,873.70 - Step 6: Final answer
x = 507,685.72
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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.