Finding the Fourth Proportional to 9,638,352,139.80, 14,457,528,209.70 and 5,215,062,408.60
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Solution
The fourth proportional to 9,638,352,139.80, 14,457,528,209.70 and 5,215,062,408.60 is: 7,822,593,612.90
Step by Step Solution
- Step 1: Write the proportion equation
9,638,352,139.80 : 14,457,528,209.70 = 5,215,062,408.60 : x - Step 2: Convert to fraction form
9,638,352,139.80/14,457,528,209.70 = 5,215,062,408.60/x - Step 3: Cross multiply
9,638,352,139.80x = 14,457,528,209.70 × 5,215,062,408.60 - Step 4: Simplify right side
9,638,352,139.80x = 75,396,911,887,680,536,576 - Step 5: Solve for x
x = 75,396,911,887,680,536,576/9,638,352,139.80 - Step 6: Final answer
x = 7,822,593,612.90
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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.