Finding the Fourth Proportional to 1,214,207,216.72, 1,821,038,236.60 and 558,528,520.40
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Solution
The fourth proportional to 1,214,207,216.72, 1,821,038,236.60 and 558,528,520.40 is: 837,667,391.43
Step by Step Solution
- Step 1: Write the proportion equation
1,214,207,216.72 : 1,821,038,236.60 = 558,528,520.40 : x - Step 2: Convert to fraction form
1,214,207,216.72/1,821,038,236.60 = 558,528,520.40/x - Step 3: Cross multiply
1,214,207,216.72x = 1,821,038,236.60 × 558,528,520.40 - Step 4: Simplify right side
1,214,207,216.72x = 1,017,101,791,880,023,040 - Step 5: Solve for x
x = 1,017,101,791,880,023,040/1,214,207,216.72 - Step 6: Final answer
x = 837,667,391.43
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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.