Finding the Fourth Proportional to 1,542,840,189.95, 2,129,083,247.57 and 907,801,813.94
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Solution
The fourth proportional to 1,542,840,189.95, 2,129,083,247.57 and 907,801,813.94 is: 1,252,745,194.70
Step by Step Solution
- Step 1: Write the proportion equation
1,542,840,189.95 : 2,129,083,247.57 = 907,801,813.94 : x - Step 2: Convert to fraction form
1,542,840,189.95/2,129,083,247.57 = 907,801,813.94/x - Step 3: Cross multiply
1,542,840,189.95x = 2,129,083,247.57 × 907,801,813.94 - Step 4: Simplify right side
1,542,840,189.95x = 1,932,785,634,158,127,616 - Step 5: Solve for x
x = 1,932,785,634,158,127,616/1,542,840,189.95 - Step 6: Final answer
x = 1,252,745,194.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.