Finding the Fourth Proportional to 1,990,656,041.40, 2,985,984,062.10 and 536,780,431.80
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Solution
The fourth proportional to 1,990,656,041.40, 2,985,984,062.10 and 536,780,431.80 is: 805,170,647.70
Step by Step Solution
- Step 1: Write the proportion equation
1,990,656,041.40 : 2,985,984,062.10 = 536,780,431.80 : x - Step 2: Convert to fraction form
1,990,656,041.40/2,985,984,062.10 = 536,780,431.80/x - Step 3: Cross multiply
1,990,656,041.40x = 2,985,984,062.10 × 536,780,431.80 - Step 4: Simplify right side
1,990,656,041.40x = 1,602,817,814,201,956,096 - Step 5: Solve for x
x = 1,602,817,814,201,956,096/1,990,656,041.40 - Step 6: Final answer
x = 805,170,647.70
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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.