Finding the Fourth Proportional to 6,126,014,143.20, 9,189,021,214.80 and 5,989,965,247.20
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Solution
The fourth proportional to 6,126,014,143.20, 9,189,021,214.80 and 5,989,965,247.20 is: 8,984,947,870.80
Step by Step Solution
- Step 1: Write the proportion equation
6,126,014,143.20 : 9,189,021,214.80 = 5,989,965,247.20 : x - Step 2: Convert to fraction form
6,126,014,143.20/9,189,021,214.80 = 5,989,965,247.20/x - Step 3: Cross multiply
6,126,014,143.20x = 9,189,021,214.80 × 5,989,965,247.20 - Step 4: Simplify right side
6,126,014,143.20x = 55,041,917,732,435,517,440 - Step 5: Solve for x
x = 55,041,917,732,435,517,440/6,126,014,143.20 - Step 6: Final answer
x = 8,984,947,870.80
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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.