Finding the Fourth Proportional to 812,029.86, 1,120,572.63 and 449,454.42
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Solution
The fourth proportional to 812,029.86, 1,120,572.63 and 449,454.42 is: 620,231.28
Step by Step Solution
- Step 1: Write the proportion equation
812,029.86 : 1,120,572.63 = 449,454.42 : x - Step 2: Convert to fraction form
812,029.86/1,120,572.63 = 449,454.42/x - Step 3: Cross multiply
812,029.86x = 1,120,572.63 × 449,454.42 - Step 4: Simplify right side
812,029.86x = 503,646,321,484.53 - Step 5: Solve for x
x = 503,646,321,484.53/812,029.86 - Step 6: Final answer
x = 620,231.28
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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.