Finding the Fourth Proportional to 743,689,709.08, 1,114,241,783.76 and 521,890,642.60
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Solution
The fourth proportional to 743,689,709.08, 1,114,241,783.76 and 521,890,642.60 is: 781,928,744.53
Step by Step Solution
- Step 1: Write the proportion equation
743,689,709.08 : 1,114,241,783.76 = 521,890,642.60 : x - Step 2: Convert to fraction form
743,689,709.08/1,114,241,783.76 = 521,890,642.60/x - Step 3: Cross multiply
743,689,709.08x = 1,114,241,783.76 × 521,890,642.60 - Step 4: Simplify right side
743,689,709.08x = 581,512,360,538,276,608 - Step 5: Solve for x
x = 581,512,360,538,276,608/743,689,709.08 - Step 6: Final answer
x = 781,928,744.53
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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.