Finding the Fourth Proportional to 1,404,080,657.20, 2,106,120,985.80 and 678,486,545.20
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Solution
The fourth proportional to 1,404,080,657.20, 2,106,120,985.80 and 678,486,545.20 is: 1,017,729,817.80
Step by Step Solution
- Step 1: Write the proportion equation
1,404,080,657.20 : 2,106,120,985.80 = 678,486,545.20 : x - Step 2: Convert to fraction form
1,404,080,657.20/2,106,120,985.80 = 678,486,545.20/x - Step 3: Cross multiply
1,404,080,657.20x = 2,106,120,985.80 × 678,486,545.20 - Step 4: Simplify right side
1,404,080,657.20x = 1,428,974,751,428,660,224 - Step 5: Solve for x
x = 1,428,974,751,428,660,224/1,404,080,657.20 - Step 6: Final answer
x = 1,017,729,817.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.