Finding the Fourth Proportional to 1,235,830,542.40, 1,854,940,207.20 and 623,106,625.60
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Solution
The fourth proportional to 1,235,830,542.40, 1,854,940,207.20 and 623,106,625.60 is: 935,262,152.49
Step by Step Solution
- Step 1: Write the proportion equation
1,235,830,542.40 : 1,854,940,207.20 = 623,106,625.60 : x - Step 2: Convert to fraction form
1,235,830,542.40/1,854,940,207.20 = 623,106,625.60/x - Step 3: Cross multiply
1,235,830,542.40x = 1,854,940,207.20 × 623,106,625.60 - Step 4: Simplify right side
1,235,830,542.40x = 1,155,825,533,198,156,800 - Step 5: Solve for x
x = 1,155,825,533,198,156,800/1,235,830,542.40 - Step 6: Final answer
x = 935,262,152.49
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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.