Finding the Fourth Proportional to 830,345,217.40, 1,245,517,826.10 and 524,580,455.80
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Solution
The fourth proportional to 830,345,217.40, 1,245,517,826.10 and 524,580,455.80 is: 786,870,683.70
Step by Step Solution
- Step 1: Write the proportion equation
830,345,217.40 : 1,245,517,826.10 = 524,580,455.80 : x - Step 2: Convert to fraction form
830,345,217.40/1,245,517,826.10 = 524,580,455.80/x - Step 3: Cross multiply
830,345,217.40x = 1,245,517,826.10 × 524,580,455.80 - Step 4: Simplify right side
830,345,217.40x = 653,374,308,922,563,072 - Step 5: Solve for x
x = 653,374,308,922,563,072/830,345,217.40 - Step 6: Final answer
x = 786,870,683.70
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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.