Finding the Fourth Proportional to 1,528,009,704.20, 2,292,014,556.30 and 437,492,772.20
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Solution
The fourth proportional to 1,528,009,704.20, 2,292,014,556.30 and 437,492,772.20 is: 656,239,158.30
Step by Step Solution
- Step 1: Write the proportion equation
1,528,009,704.20 : 2,292,014,556.30 = 437,492,772.20 : x - Step 2: Convert to fraction form
1,528,009,704.20/2,292,014,556.30 = 437,492,772.20/x - Step 3: Cross multiply
1,528,009,704.20x = 2,292,014,556.30 × 437,492,772.20 - Step 4: Simplify right side
1,528,009,704.20x = 1,002,739,802,158,440,064 - Step 5: Solve for x
x = 1,002,739,802,158,440,064/1,528,009,704.20 - Step 6: Final answer
x = 656,239,158.30
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Double scale
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Similar ratio
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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.