Finding the Fourth Proportional to 1,074,240,163.20, 1,611,360,244.80 and 859,249,315.20
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Solution
The fourth proportional to 1,074,240,163.20, 1,611,360,244.80 and 859,249,315.20 is: 1,288,873,972.80
Step by Step Solution
- Step 1: Write the proportion equation
1,074,240,163.20 : 1,611,360,244.80 = 859,249,315.20 : x - Step 2: Convert to fraction form
1,074,240,163.20/1,611,360,244.80 = 859,249,315.20/x - Step 3: Cross multiply
1,074,240,163.20x = 1,611,360,244.80 × 859,249,315.20 - Step 4: Simplify right side
1,074,240,163.20x = 1,384,560,186,884,904,448 - Step 5: Solve for x
x = 1,384,560,186,884,904,448/1,074,240,163.20 - Step 6: Final answer
x = 1,288,873,972.80
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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.