Finding the Fourth Proportional to 9,199,431,269.80, 12,695,190,059.72 and 5,130,337,394.95
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Solution
The fourth proportional to 9,199,431,269.80, 12,695,190,059.72 and 5,130,337,394.95 is: 7,079,851,611.39
Step by Step Solution
- Step 1: Write the proportion equation
9,199,431,269.80 : 12,695,190,059.72 = 5,130,337,394.95 : x - Step 2: Convert to fraction form
9,199,431,269.80/12,695,190,059.72 = 5,130,337,394.95/x - Step 3: Cross multiply
9,199,431,269.80x = 12,695,190,059.72 × 5,130,337,394.95 - Step 4: Simplify right side
9,199,431,269.80x = 65,130,608,299,357,569,024 - Step 5: Solve for x
x = 65,130,608,299,357,569,024/9,199,431,269.80 - Step 6: Final answer
x = 7,079,851,611.39
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.