Finding the Fourth Proportional to 687,813.10, 1,031,898.87 and 261,356.62
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Solution
The fourth proportional to 687,813.10, 1,031,898.87 and 261,356.62 is: 392,103.03
Step by Step Solution
- Step 1: Write the proportion equation
687,813.10 : 1,031,898.87 = 261,356.62 : x - Step 2: Convert to fraction form
687,813.10/1,031,898.87 = 261,356.62/x - Step 3: Cross multiply
687,813.10x = 1,031,898.87 × 261,356.62 - Step 4: Simplify right side
687,813.10x = 269,693,600,845.02 - Step 5: Solve for x
x = 269,693,600,845.02/687,813.10 - Step 6: Final answer
x = 392,103.03
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.