Finding the Fourth Proportional to 900,878.91, 1,243,193.69 and 492,979.11
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Solution
The fourth proportional to 900,878.91, 1,243,193.69 and 492,979.11 is: 680,300.66
Step by Step Solution
- Step 1: Write the proportion equation
900,878.91 : 1,243,193.69 = 492,979.11 : x - Step 2: Convert to fraction form
900,878.91/1,243,193.69 = 492,979.11/x - Step 3: Cross multiply
900,878.91x = 1,243,193.69 × 492,979.11 - Step 4: Simplify right side
900,878.91x = 612,868,516,388.92 - Step 5: Solve for x
x = 612,868,516,388.92/900,878.91 - Step 6: Final answer
x = 680,300.66
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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.