Finding the Fourth Proportional to 19,991,278.16, 29,986,917.23 and 4,845,209.66
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Solution
The fourth proportional to 19,991,278.16, 29,986,917.23 and 4,845,209.66 is: 7,267,814.49
Step by Step Solution
- Step 1: Write the proportion equation
19,991,278.16 : 29,986,917.23 = 4,845,209.66 : x - Step 2: Convert to fraction form
19,991,278.16/29,986,917.23 = 4,845,209.66/x - Step 3: Cross multiply
19,991,278.16x = 29,986,917.23 × 4,845,209.66 - Step 4: Simplify right side
19,991,278.16x = 145,292,901,036,416.44 - Step 5: Solve for x
x = 145,292,901,036,416.44/19,991,278.16 - Step 6: Final answer
x = 7,267,814.49
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1.5x scale
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.