Finding the Fourth Proportional to 990,400.24, 1,366,748.52 and 537,691.12
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Solution
The fourth proportional to 990,400.24, 1,366,748.52 and 537,691.12 is: 742,011.68
Step by Step Solution
- Step 1: Write the proportion equation
990,400.24 : 1,366,748.52 = 537,691.12 : x - Step 2: Convert to fraction form
990,400.24/1,366,748.52 = 537,691.12/x - Step 3: Cross multiply
990,400.24x = 1,366,748.52 × 537,691.12 - Step 4: Simplify right side
990,400.24x = 734,888,542,477.14 - Step 5: Solve for x
x = 734,888,542,477.14/990,400.24 - Step 6: Final answer
x = 742,011.68
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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.