Finding the Fourth Proportional to 687,811.80, 1,031,717.70 and 617,827.80
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Solution
The fourth proportional to 687,811.80, 1,031,717.70 and 617,827.80 is: 926,741.70
Step by Step Solution
- Step 1: Write the proportion equation
687,811.80 : 1,031,717.70 = 617,827.80 : x - Step 2: Convert to fraction form
687,811.80/1,031,717.70 = 617,827.80/x - Step 3: Cross multiply
687,811.80x = 1,031,717.70 × 617,827.80 - Step 4: Simplify right side
687,811.80x = 637,423,876,812.06 - Step 5: Solve for x
x = 637,423,876,812.06/687,811.80 - Step 6: Final answer
x = 926,741.70
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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.