Finding the Fourth Proportional to 1,224,209.28, 1,689,566.49 and 687,768.96
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Solution
The fourth proportional to 1,224,209.28, 1,689,566.49 and 687,768.96 is: 949,209.75
Step by Step Solution
- Step 1: Write the proportion equation
1,224,209.28 : 1,689,566.49 = 687,768.96 : x - Step 2: Convert to fraction form
1,224,209.28/1,689,566.49 = 687,768.96/x - Step 3: Cross multiply
1,224,209.28x = 1,689,566.49 × 687,768.96 - Step 4: Simplify right side
1,224,209.28x = 1,162,031,387,678.15 - Step 5: Solve for x
x = 1,162,031,387,678.15/1,224,209.28 - Step 6: Final answer
x = 949,209.75
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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.