Finding the Fourth Proportional to 984,516,385.68, 1,358,621,604.63 and 538,492,563.54
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Solution
The fourth proportional to 984,516,385.68, 1,358,621,604.63 and 538,492,563.54 is: 743,113,716.95
Step by Step Solution
- Step 1: Write the proportion equation
984,516,385.68 : 1,358,621,604.63 = 538,492,563.54 : x - Step 2: Convert to fraction form
984,516,385.68/1,358,621,604.63 = 538,492,563.54/x - Step 3: Cross multiply
984,516,385.68x = 1,358,621,604.63 × 538,492,563.54 - Step 4: Simplify right side
984,516,385.68x = 731,607,630,758,036,992 - Step 5: Solve for x
x = 731,607,630,758,036,992/984,516,385.68 - Step 6: Final answer
x = 743,113,716.95
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Double scale
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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.