Finding the Fourth Proportional to 812,035.98, 1,120,612.14 and 449,485.02
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Solution
The fourth proportional to 812,035.98, 1,120,612.14 and 449,485.02 is: 620,290.70
Step by Step Solution
- Step 1: Write the proportion equation
812,035.98 : 1,120,612.14 = 449,485.02 : x - Step 2: Convert to fraction form
812,035.98/1,120,612.14 = 449,485.02/x - Step 3: Cross multiply
812,035.98x = 1,120,612.14 × 449,485.02 - Step 4: Simplify right side
812,035.98x = 503,698,370,160.14 - Step 5: Solve for x
x = 503,698,370,160.14/812,035.98 - Step 6: Final answer
x = 620,290.70
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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.