Finding the Fourth Proportional to 1,615,780.26, 2,229,675.12 and 890,587.98
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Solution
The fourth proportional to 1,615,780.26, 2,229,675.12 and 890,587.98 is: 1,228,955.39
Step by Step Solution
- Step 1: Write the proportion equation
1,615,780.26 : 2,229,675.12 = 890,587.98 : x - Step 2: Convert to fraction form
1,615,780.26/2,229,675.12 = 890,587.98/x - Step 3: Cross multiply
1,615,780.26x = 2,229,675.12 × 890,587.98 - Step 4: Simplify right side
1,615,780.26x = 1,985,721,861,177.06 - Step 5: Solve for x
x = 1,985,721,861,177.06/1,615,780.26 - Step 6: Final answer
x = 1,228,955.39
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1.5x scale
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.