Finding the Fourth Proportional to 1,590,193,421.20, 2,385,290,131.80 and 620,845,037.20
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Solution
The fourth proportional to 1,590,193,421.20, 2,385,290,131.80 and 620,845,037.20 is: 931,267,555.80
Step by Step Solution
- Step 1: Write the proportion equation
1,590,193,421.20 : 2,385,290,131.80 = 620,845,037.20 : x - Step 2: Convert to fraction form
1,590,193,421.20/2,385,290,131.80 = 620,845,037.20/x - Step 3: Cross multiply
1,590,193,421.20x = 2,385,290,131.80 × 620,845,037.20 - Step 4: Simplify right side
1,590,193,421.20x = 1,480,895,540,610,164,224 - Step 5: Solve for x
x = 1,480,895,540,610,164,224/1,590,193,421.20 - Step 6: Final answer
x = 931,267,555.80
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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.