Finding the Fourth Proportional to 870,447,029.60, 1,305,670,544.40 and 757,072,949.60
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Solution
The fourth proportional to 870,447,029.60, 1,305,670,544.40 and 757,072,949.60 is: 1,135,609,424.40
Step by Step Solution
- Step 1: Write the proportion equation
870,447,029.60 : 1,305,670,544.40 = 757,072,949.60 : x - Step 2: Convert to fraction form
870,447,029.60/1,305,670,544.40 = 757,072,949.60/x - Step 3: Cross multiply
870,447,029.60x = 1,305,670,544.40 × 757,072,949.60 - Step 4: Simplify right side
870,447,029.60x = 988,487,850,254,745,856 - Step 5: Solve for x
x = 988,487,850,254,745,856/870,447,029.60 - Step 6: Final answer
x = 1,135,609,424.40
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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.