Finding the Fourth Proportional to 776,925,643.20, 1,165,388,464.80 and 532,037,630.40
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Solution
The fourth proportional to 776,925,643.20, 1,165,388,464.80 and 532,037,630.40 is: 798,056,445.60
Step by Step Solution
- Step 1: Write the proportion equation
776,925,643.20 : 1,165,388,464.80 = 532,037,630.40 : x - Step 2: Convert to fraction form
776,925,643.20/1,165,388,464.80 = 532,037,630.40/x - Step 3: Cross multiply
776,925,643.20x = 1,165,388,464.80 × 532,037,630.40 - Step 4: Simplify right side
776,925,643.20x = 620,030,517,307,685,760 - Step 5: Solve for x
x = 620,030,517,307,685,760/776,925,643.20 - Step 6: Final answer
x = 798,056,445.60
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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.