Finding the Fourth Proportional to 1,405,385.36, 1,939,432.42 and 760,805.53
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Solution
The fourth proportional to 1,405,385.36, 1,939,432.42 and 760,805.53 is: 1,049,911.97
Step by Step Solution
- Step 1: Write the proportion equation
1,405,385.36 : 1,939,432.42 = 760,805.53 : x - Step 2: Convert to fraction form
1,405,385.36/1,939,432.42 = 760,805.53/x - Step 3: Cross multiply
1,405,385.36x = 1,939,432.42 × 760,805.53 - Step 4: Simplify right side
1,405,385.36x = 1,475,530,913,572.58 - Step 5: Solve for x
x = 1,475,530,913,572.58/1,405,385.36 - Step 6: Final answer
x = 1,049,911.97
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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.