Finding the Fourth Proportional to 2,128,953,420.20, 3,193,430,130.30 and 1,208,474,085.80
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Solution
The fourth proportional to 2,128,953,420.20, 3,193,430,130.30 and 1,208,474,085.80 is: 1,812,711,128.70
Step by Step Solution
- Step 1: Write the proportion equation
2,128,953,420.20 : 3,193,430,130.30 = 1,208,474,085.80 : x - Step 2: Convert to fraction form
2,128,953,420.20/3,193,430,130.30 = 1,208,474,085.80/x - Step 3: Cross multiply
2,128,953,420.20x = 3,193,430,130.30 × 1,208,474,085.80 - Step 4: Simplify right side
2,128,953,420.20x = 3,859,177,557,280,467,456 - Step 5: Solve for x
x = 3,859,177,557,280,467,456/2,128,953,420.20 - Step 6: Final answer
x = 1,812,711,128.70
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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.