Finding the Fourth Proportional to 788,972,854.20, 1,183,459,281.30 and 329,240,959.80
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Solution
The fourth proportional to 788,972,854.20, 1,183,459,281.30 and 329,240,959.80 is: 493,861,439.70
Step by Step Solution
- Step 1: Write the proportion equation
788,972,854.20 : 1,183,459,281.30 = 329,240,959.80 : x - Step 2: Convert to fraction form
788,972,854.20/1,183,459,281.30 = 329,240,959.80/x - Step 3: Cross multiply
788,972,854.20x = 1,183,459,281.30 × 329,240,959.80 - Step 4: Simplify right side
788,972,854.20x = 389,643,269,659,430,208 - Step 5: Solve for x
x = 389,643,269,659,430,208/788,972,854.20 - Step 6: Final answer
x = 493,861,439.70
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Double scale
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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.