Finding the Fourth Proportional to 1,611,593,819.20, 2,417,390,728.80 and 1,121,817,793.60
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Solution
The fourth proportional to 1,611,593,819.20, 2,417,390,728.80 and 1,121,817,793.60 is: 1,682,726,690.40
Step by Step Solution
- Step 1: Write the proportion equation
1,611,593,819.20 : 2,417,390,728.80 = 1,121,817,793.60 : x - Step 2: Convert to fraction form
1,611,593,819.20/2,417,390,728.80 = 1,121,817,793.60/x - Step 3: Cross multiply
1,611,593,819.20x = 2,417,390,728.80 × 1,121,817,793.60 - Step 4: Simplify right side
1,611,593,819.20x = 2,711,871,933,651,511,808 - Step 5: Solve for x
x = 2,711,871,933,651,511,808/1,611,593,819.20 - Step 6: Final answer
x = 1,682,726,690.40
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1.5x scale
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.