Finding the Fourth Proportional to 1,990,656,069.40, 2,985,984,104.10 and 536,780,459.80
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Solution
The fourth proportional to 1,990,656,069.40, 2,985,984,104.10 and 536,780,459.80 is: 805,170,689.70
Step by Step Solution
- Step 1: Write the proportion equation
1,990,656,069.40 : 2,985,984,104.10 = 536,780,459.80 : x - Step 2: Convert to fraction form
1,990,656,069.40/2,985,984,104.10 = 536,780,459.80/x - Step 3: Cross multiply
1,990,656,069.40x = 2,985,984,104.10 × 536,780,459.80 - Step 4: Simplify right side
1,990,656,069.40x = 1,602,817,920,354,289,152 - Step 5: Solve for x
x = 1,602,817,920,354,289,152/1,990,656,069.40 - Step 6: Final answer
x = 805,170,689.70
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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.