Finding the Fourth Proportional to 1,848,905,820.99, 2,771,622,661.62 and 621,215,700.03
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Solution
The fourth proportional to 1,848,905,820.99, 2,771,622,661.62 and 621,215,700.03 is: 931,240,246.21
Step by Step Solution
- Step 1: Write the proportion equation
1,848,905,820.99 : 2,771,622,661.62 = 621,215,700.03 : x - Step 2: Convert to fraction form
1,848,905,820.99/2,771,622,661.62 = 621,215,700.03/x - Step 3: Cross multiply
1,848,905,820.99x = 2,771,622,661.62 × 621,215,700.03 - Step 4: Simplify right side
1,848,905,820.99x = 1,721,775,511,957,280,000 - Step 5: Solve for x
x = 1,721,775,511,957,280,000/1,848,905,820.99 - Step 6: Final answer
x = 931,240,246.21
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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.