Finding the Fourth Proportional to 1,270,585,447.28, 1,905,449,697.84 and 483,452,239.76
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Solution
The fourth proportional to 1,270,585,447.28, 1,905,449,697.84 and 483,452,239.76 is: 725,015,327.50
Step by Step Solution
- Step 1: Write the proportion equation
1,270,585,447.28 : 1,905,449,697.84 = 483,452,239.76 : x - Step 2: Convert to fraction form
1,270,585,447.28/1,905,449,697.84 = 483,452,239.76/x - Step 3: Cross multiply
1,270,585,447.28x = 1,905,449,697.84 × 483,452,239.76 - Step 4: Simplify right side
1,270,585,447.28x = 921,193,924,170,763,136 - Step 5: Solve for x
x = 921,193,924,170,763,136/1,270,585,447.28 - Step 6: Final answer
x = 725,015,327.50
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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.