Finding the Fourth Proportional to 1,780,118.10, 2,670,140.19 and 432,287.75
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Solution
The fourth proportional to 1,780,118.10, 2,670,140.19 and 432,287.75 is: 648,422.65
Step by Step Solution
- Step 1: Write the proportion equation
1,780,118.10 : 2,670,140.19 = 432,287.75 : x - Step 2: Convert to fraction form
1,780,118.10/2,670,140.19 = 432,287.75/x - Step 3: Cross multiply
1,780,118.10x = 2,670,140.19 × 432,287.75 - Step 4: Simplify right side
1,780,118.10x = 1,154,268,903,216.10 - Step 5: Solve for x
x = 1,154,268,903,216.10/1,780,118.10 - Step 6: Final answer
x = 648,422.65
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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.