Finding the Fourth Proportional to 19,991,422.28, 29,987,133.74 and 4,845,353.78
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Solution
The fourth proportional to 19,991,422.28, 29,987,133.74 and 4,845,353.78 is: 7,268,030.75
Step by Step Solution
- Step 1: Write the proportion equation
19,991,422.28 : 29,987,133.74 = 4,845,353.78 : x - Step 2: Convert to fraction form
19,991,422.28/29,987,133.74 = 4,845,353.78/x - Step 3: Cross multiply
19,991,422.28x = 29,987,133.74 × 4,845,353.78 - Step 4: Simplify right side
19,991,422.28x = 145,298,271,818,474.53 - Step 5: Solve for x
x = 145,298,271,818,474.53/19,991,422.28 - Step 6: Final answer
x = 7,268,030.75
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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.