Finding the Fourth Proportional to 1,220,965.26, 1,684,932.06 and 684,421.26
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Solution
The fourth proportional to 1,220,965.26, 1,684,932.06 and 684,421.26 is: 944,501.34
Step by Step Solution
- Step 1: Write the proportion equation
1,220,965.26 : 1,684,932.06 = 684,421.26 : x - Step 2: Convert to fraction form
1,220,965.26/1,684,932.06 = 684,421.26/x - Step 3: Cross multiply
1,220,965.26x = 1,684,932.06 × 684,421.26 - Step 4: Simplify right side
1,220,965.26x = 1,153,203,323,519.60 - Step 5: Solve for x
x = 1,153,203,323,519.60/1,220,965.26 - Step 6: Final answer
x = 944,501.34
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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.