Finding the Fourth Proportional to 1,259,714,542.80, 1,889,571,814.20 and 741,878,432.40
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Solution
The fourth proportional to 1,259,714,542.80, 1,889,571,814.20 and 741,878,432.40 is: 1,112,817,648.60
Step by Step Solution
- Step 1: Write the proportion equation
1,259,714,542.80 : 1,889,571,814.20 = 741,878,432.40 : x - Step 2: Convert to fraction form
1,259,714,542.80/1,889,571,814.20 = 741,878,432.40/x - Step 3: Cross multiply
1,259,714,542.80x = 1,889,571,814.20 × 741,878,432.40 - Step 4: Simplify right side
1,259,714,542.80x = 1,401,832,575,425,920,000 - Step 5: Solve for x
x = 1,401,832,575,425,920,000/1,259,714,542.80 - Step 6: Final answer
x = 1,112,817,648.60
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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.