Finding the Fourth Proportional to 1,219,110,479.09, 1,682,512,026.27 and 683,406,832.25
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Solution
The fourth proportional to 1,219,110,479.09, 1,682,512,026.27 and 683,406,832.25 is: 943,179,665.68
Step by Step Solution
- Step 1: Write the proportion equation
1,219,110,479.09 : 1,682,512,026.27 = 683,406,832.25 : x - Step 2: Convert to fraction form
1,219,110,479.09/1,682,512,026.27 = 683,406,832.25/x - Step 3: Cross multiply
1,219,110,479.09x = 1,682,512,026.27 × 683,406,832.25 - Step 4: Simplify right side
1,219,110,479.09x = 1,149,840,214,095,709,440 - Step 5: Solve for x
x = 1,149,840,214,095,709,440/1,219,110,479.09 - Step 6: Final answer
x = 943,179,665.68
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.