Finding the Fourth Proportional to 28,678,156.44, 39,575,357.54 and 15,625,522.60
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Solution
The fourth proportional to 28,678,156.44, 39,575,357.54 and 15,625,522.60 is: 21,562,949.66
Step by Step Solution
- Step 1: Write the proportion equation
28,678,156.44 : 39,575,357.54 = 15,625,522.60 : x - Step 2: Convert to fraction form
28,678,156.44/39,575,357.54 = 15,625,522.60/x - Step 3: Cross multiply
28,678,156.44x = 39,575,357.54 × 15,625,522.60 - Step 4: Simplify right side
28,678,156.44x = 618,385,643,644,350.38 - Step 5: Solve for x
x = 618,385,643,644,350.38/28,678,156.44 - Step 6: Final answer
x = 21,562,949.66
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1.5x scale
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.