Finding the Fourth Proportional to 1,216,347.12, 1,678,554.84 and 679,803.12
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Solution
The fourth proportional to 1,216,347.12, 1,678,554.84 and 679,803.12 is: 938,125.97
Step by Step Solution
- Step 1: Write the proportion equation
1,216,347.12 : 1,678,554.84 = 679,803.12 : x - Step 2: Convert to fraction form
1,216,347.12/1,678,554.84 = 679,803.12/x - Step 3: Cross multiply
1,216,347.12x = 1,678,554.84 × 679,803.12 - Step 4: Simplify right side
1,216,347.12x = 1,141,086,817,323.10 - Step 5: Solve for x
x = 1,141,086,817,323.10/1,216,347.12 - Step 6: Final answer
x = 938,125.97
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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.