Finding the Fourth Proportional to 608,926.42, 840,038.09 and 394,135.50
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Solution
The fourth proportional to 608,926.42, 840,038.09 and 394,135.50 is: 543,725.52
Step by Step Solution
- Step 1: Write the proportion equation
608,926.42 : 840,038.09 = 394,135.50 : x - Step 2: Convert to fraction form
608,926.42/840,038.09 = 394,135.50/x - Step 3: Cross multiply
608,926.42x = 840,038.09 × 394,135.50 - Step 4: Simplify right side
608,926.42x = 331,088,832,621.20 - Step 5: Solve for x
x = 331,088,832,621.20/608,926.42 - Step 6: Final answer
x = 543,725.52
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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.