Finding the Fourth Proportional to 1,428,539.99, 1,971,323.16 and 783,970.94
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Solution
The fourth proportional to 1,428,539.99, 1,971,323.16 and 783,970.94 is: 1,081,845.85
Step by Step Solution
- Step 1: Write the proportion equation
1,428,539.99 : 1,971,323.16 = 783,970.94 : x - Step 2: Convert to fraction form
1,428,539.99/1,971,323.16 = 783,970.94/x - Step 3: Cross multiply
1,428,539.99x = 1,971,323.16 × 783,970.94 - Step 4: Simplify right side
1,428,539.99x = 1,545,460,060,932.35 - Step 5: Solve for x
x = 1,545,460,060,932.35/1,428,539.99 - Step 6: Final answer
x = 1,081,845.85
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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.