Finding the Fourth Proportional to 1,128,658.26, 1,557,567.45 and 619,408.02
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Solution
The fourth proportional to 1,128,658.26, 1,557,567.45 and 619,408.02 is: 854,793.52
Step by Step Solution
- Step 1: Write the proportion equation
1,128,658.26 : 1,557,567.45 = 619,408.02 : x - Step 2: Convert to fraction form
1,128,658.26/1,557,567.45 = 619,408.02/x - Step 3: Cross multiply
1,128,658.26x = 1,557,567.45 × 619,408.02 - Step 4: Simplify right side
1,128,658.26x = 964,769,770,220.95 - Step 5: Solve for x
x = 964,769,770,220.95/1,128,658.26 - Step 6: Final answer
x = 854,793.52
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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.