Finding the Fourth Proportional to 2,153,520,302.76, 3,228,986,776.14 and 841,860,138.60
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Solution
The fourth proportional to 2,153,520,302.76, 3,228,986,776.14 and 841,860,138.60 is: 1,262,284,479.70
Step by Step Solution
- Step 1: Write the proportion equation
2,153,520,302.76 : 3,228,986,776.14 = 841,860,138.60 : x - Step 2: Convert to fraction form
2,153,520,302.76/3,228,986,776.14 = 841,860,138.60/x - Step 3: Cross multiply
2,153,520,302.76x = 3,228,986,776.14 × 841,860,138.60 - Step 4: Simplify right side
2,153,520,302.76x = 2,718,355,254,898,787,328 - Step 5: Solve for x
x = 2,718,355,254,898,787,328/2,153,520,302.76 - Step 6: Final answer
x = 1,262,284,479.70
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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.