Finding the Fourth Proportional to 515,893.66, 711,934.74 and 286,451.44
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Solution
The fourth proportional to 515,893.66, 711,934.74 and 286,451.44 is: 395,303.81
Step by Step Solution
- Step 1: Write the proportion equation
515,893.66 : 711,934.74 = 286,451.44 : x - Step 2: Convert to fraction form
515,893.66/711,934.74 = 286,451.44/x - Step 3: Cross multiply
515,893.66x = 711,934.74 × 286,451.44 - Step 4: Simplify right side
515,893.66x = 203,934,731,459.03 - Step 5: Solve for x
x = 203,934,731,459.03/515,893.66 - Step 6: Final answer
x = 395,303.81
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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.