Finding the Fourth Proportional to 805,101,206.70, 1,207,651,810.05 and 345,085,877.10
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Solution
The fourth proportional to 805,101,206.70, 1,207,651,810.05 and 345,085,877.10 is: 517,628,815.65
Step by Step Solution
- Step 1: Write the proportion equation
805,101,206.70 : 1,207,651,810.05 = 345,085,877.10 : x - Step 2: Convert to fraction form
805,101,206.70/1,207,651,810.05 = 345,085,877.10/x - Step 3: Cross multiply
805,101,206.70x = 1,207,651,810.05 × 345,085,877.10 - Step 4: Simplify right side
805,101,206.70x = 416,743,584,102,506,880 - Step 5: Solve for x
x = 416,743,584,102,506,880/805,101,206.70 - Step 6: Final answer
x = 517,628,815.65
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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.