Finding the Fourth Proportional to 828,927,960.21, 1,144,020,893.90 and 471,782,571.78
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Solution
The fourth proportional to 828,927,960.21, 1,144,020,893.90 and 471,782,571.78 is: 651,117,039.60
Step by Step Solution
- Step 1: Write the proportion equation
828,927,960.21 : 1,144,020,893.90 = 471,782,571.78 : x - Step 2: Convert to fraction form
828,927,960.21/1,144,020,893.90 = 471,782,571.78/x - Step 3: Cross multiply
828,927,960.21x = 1,144,020,893.90 × 471,782,571.78 - Step 4: Simplify right side
828,927,960.21x = 539,729,119,494,196,544 - Step 5: Solve for x
x = 539,729,119,494,196,544/828,927,960.21 - Step 6: Final answer
x = 651,117,039.60
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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.