Finding the Fourth Proportional to 687,809.58, 1,031,892.75 and 261,352.79
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Solution
The fourth proportional to 687,809.58, 1,031,892.75 and 261,352.79 is: 392,096.96
Step by Step Solution
- Step 1: Write the proportion equation
687,809.58 : 1,031,892.75 = 261,352.79 : x - Step 2: Convert to fraction form
687,809.58/1,031,892.75 = 261,352.79/x - Step 3: Cross multiply
687,809.58x = 1,031,892.75 × 261,352.79 - Step 4: Simplify right side
687,809.58x = 269,688,044,033.81 - Step 5: Solve for x
x = 269,688,044,033.81/687,809.58 - Step 6: Final answer
x = 392,096.96
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.