Finding the Fourth Proportional to 3,685,814,137.20, 5,528,721,205.80 and 1,358,421,421.80
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Solution
The fourth proportional to 3,685,814,137.20, 5,528,721,205.80 and 1,358,421,421.80 is: 2,037,632,132.70
Step by Step Solution
- Step 1: Write the proportion equation
3,685,814,137.20 : 5,528,721,205.80 = 1,358,421,421.80 : x - Step 2: Convert to fraction form
3,685,814,137.20/5,528,721,205.80 = 1,358,421,421.80/x - Step 3: Cross multiply
3,685,814,137.20x = 5,528,721,205.80 × 1,358,421,421.80 - Step 4: Simplify right side
3,685,814,137.20x = 7,510,333,321,118,646,272 - Step 5: Solve for x
x = 7,510,333,321,118,646,272/3,685,814,137.20 - Step 6: Final answer
x = 2,037,632,132.70
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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.