Finding the Fourth Proportional to 6,639,372.80, 9,968,390.40 and 4,119,948.80
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Solution
The fourth proportional to 6,639,372.80, 9,968,390.40 and 4,119,948.80 is: 6,185,713.52
Step by Step Solution
- Step 1: Write the proportion equation
6,639,372.80 : 9,968,390.40 = 4,119,948.80 : x - Step 2: Convert to fraction form
6,639,372.80/9,968,390.40 = 4,119,948.80/x - Step 3: Cross multiply
6,639,372.80x = 9,968,390.40 × 4,119,948.80 - Step 4: Simplify right side
6,639,372.80x = 41,069,258,066,411.52 - Step 5: Solve for x
x = 41,069,258,066,411.52/6,639,372.80 - Step 6: Final answer
x = 6,185,713.52
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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.