Finding the Fourth Proportional to 1,555,065.20, 2,145,999.99 and 866,780.76
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Solution
The fourth proportional to 1,555,065.20, 2,145,999.99 and 866,780.76 is: 1,196,163.03
Step by Step Solution
- Step 1: Write the proportion equation
1,555,065.20 : 2,145,999.99 = 866,780.76 : x - Step 2: Convert to fraction form
1,555,065.20/2,145,999.99 = 866,780.76/x - Step 3: Cross multiply
1,555,065.20x = 2,145,999.99 × 866,780.76 - Step 4: Simplify right side
1,555,065.20x = 1,860,111,502,292.19 - Step 5: Solve for x
x = 1,860,111,502,292.19/1,555,065.20 - Step 6: Final answer
x = 1,196,163.03
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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.