Finding the Fourth Proportional to 19,939,610.40, 29,909,415.60 and 19,813,639.20
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Solution
The fourth proportional to 19,939,610.40, 29,909,415.60 and 19,813,639.20 is: 29,720,458.80
Step by Step Solution
- Step 1: Write the proportion equation
19,939,610.40 : 29,909,415.60 = 19,813,639.20 : x - Step 2: Convert to fraction form
19,939,610.40/29,909,415.60 = 19,813,639.20/x - Step 3: Cross multiply
19,939,610.40x = 29,909,415.60 × 19,813,639.20 - Step 4: Simplify right side
19,939,610.40x = 592,614,369,381,251.50 - Step 5: Solve for x
x = 592,614,369,381,251.50/19,939,610.40 - Step 6: Final answer
x = 29,720,458.80
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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.