Finding the Fourth Proportional to 1,212,477,617.60, 1,818,716,426.40 and 523,163,211.20
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Solution
The fourth proportional to 1,212,477,617.60, 1,818,716,426.40 and 523,163,211.20 is: 784,744,816.80
Step by Step Solution
- Step 1: Write the proportion equation
1,212,477,617.60 : 1,818,716,426.40 = 523,163,211.20 : x - Step 2: Convert to fraction form
1,212,477,617.60/1,818,716,426.40 = 523,163,211.20/x - Step 3: Cross multiply
1,212,477,617.60x = 1,818,716,426.40 × 523,163,211.20 - Step 4: Simplify right side
1,212,477,617.60x = 951,485,525,897,612,544 - Step 5: Solve for x
x = 951,485,525,897,612,544/1,212,477,617.60 - Step 6: Final answer
x = 784,744,816.80
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Double scale
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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.