Finding the Fourth Proportional to 1,025,818,880.96, 1,415,631,266.42 and 555,920,201.94
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Solution
The fourth proportional to 1,025,818,880.96, 1,415,631,266.42 and 555,920,201.94 is: 767,170,534.78
Step by Step Solution
- Step 1: Write the proportion equation
1,025,818,880.96 : 1,415,631,266.42 = 555,920,201.94 : x - Step 2: Convert to fraction form
1,025,818,880.96/1,415,631,266.42 = 555,920,201.94/x - Step 3: Cross multiply
1,025,818,880.96x = 1,415,631,266.42 × 555,920,201.94 - Step 4: Simplify right side
1,025,818,880.96x = 786,978,019,492,696,064 - Step 5: Solve for x
x = 786,978,019,492,696,064/1,025,818,880.96 - Step 6: Final answer
x = 767,170,534.78
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Double scale
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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.