Finding the Fourth Proportional to 1,212,477,621.60, 1,818,716,432.40 and 523,163,215.20
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Solution
The fourth proportional to 1,212,477,621.60, 1,818,716,432.40 and 523,163,215.20 is: 784,744,822.80
Step by Step Solution
- Step 1: Write the proportion equation
1,212,477,621.60 : 1,818,716,432.40 = 523,163,215.20 : x - Step 2: Convert to fraction form
1,212,477,621.60/1,818,716,432.40 = 523,163,215.20/x - Step 3: Cross multiply
1,212,477,621.60x = 1,818,716,432.40 × 523,163,215.20 - Step 4: Simplify right side
1,212,477,621.60x = 951,485,536,311,457,536 - Step 5: Solve for x
x = 951,485,536,311,457,536/1,212,477,621.60 - Step 6: Final answer
x = 784,744,822.80
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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.