Finding the Fourth Proportional to 775,947,507.40, 1,164,435,321.76 and 426,437,652.60
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Solution
The fourth proportional to 775,947,507.40, 1,164,435,321.76 and 426,437,652.60 is: 639,938,991.33
Step by Step Solution
- Step 1: Write the proportion equation
775,947,507.40 : 1,164,435,321.76 = 426,437,652.60 : x - Step 2: Convert to fraction form
775,947,507.40/1,164,435,321.76 = 426,437,652.60/x - Step 3: Cross multiply
775,947,507.40x = 1,164,435,321.76 × 426,437,652.60 - Step 4: Simplify right side
775,947,507.40x = 496,559,065,207,905,792 - Step 5: Solve for x
x = 496,559,065,207,905,792/775,947,507.40 - Step 6: Final answer
x = 639,938,991.33
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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.