Finding the Fourth Proportional to 1,221,929.74, 1,686,218.88 and 678,089.26
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Solution
The fourth proportional to 1,221,929.74, 1,686,218.88 and 678,089.26 is: 935,738.67
Step by Step Solution
- Step 1: Write the proportion equation
1,221,929.74 : 1,686,218.88 = 678,089.26 : x - Step 2: Convert to fraction form
1,221,929.74/1,686,218.88 = 678,089.26/x - Step 3: Cross multiply
1,221,929.74x = 1,686,218.88 × 678,089.26 - Step 4: Simplify right side
1,221,929.74x = 1,143,406,912,537.23 - Step 5: Solve for x
x = 1,143,406,912,537.23/1,221,929.74 - Step 6: Final answer
x = 935,738.67
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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.