Finding the Fourth Proportional to 7,174,989.36, 9,901,478.35 and 3,911,803.23
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Solution
The fourth proportional to 7,174,989.36, 9,901,478.35 and 3,911,803.23 is: 5,398,284.66
Step by Step Solution
- Step 1: Write the proportion equation
7,174,989.36 : 9,901,478.35 = 3,911,803.23 : x - Step 2: Convert to fraction form
7,174,989.36/9,901,478.35 = 3,911,803.23/x - Step 3: Cross multiply
7,174,989.36x = 9,901,478.35 × 3,911,803.23 - Step 4: Simplify right side
7,174,989.36x = 38,732,634,991,305.07 - Step 5: Solve for x
x = 38,732,634,991,305.07/7,174,989.36 - Step 6: Final answer
x = 5,398,284.66
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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.