Finding the Fourth Proportional to 1,679,565,556.79, 2,519,254,168.12 and 515,030,850.91
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Solution
The fourth proportional to 1,679,565,556.79, 2,519,254,168.12 and 515,030,850.91 is: 772,517,400.48
Step by Step Solution
- Step 1: Write the proportion equation
1,679,565,556.79 : 2,519,254,168.12 = 515,030,850.91 : x - Step 2: Convert to fraction form
1,679,565,556.79/2,519,254,168.12 = 515,030,850.91/x - Step 3: Cross multiply
1,679,565,556.79x = 2,519,254,168.12 × 515,030,850.91 - Step 4: Simplify right side
1,679,565,556.79x = 1,297,493,617,865,407,744 - Step 5: Solve for x
x = 1,297,493,617,865,407,744/1,679,565,556.79 - Step 6: Final answer
x = 772,517,400.48
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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.