Finding the Fourth Proportional to 7,882,985.40, 10,878,535.80 and 4,261,313.40
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Solution
The fourth proportional to 7,882,985.40, 10,878,535.80 and 4,261,313.40 is: 5,880,621.11
Step by Step Solution
- Step 1: Write the proportion equation
7,882,985.40 : 10,878,535.80 = 4,261,313.40 : x - Step 2: Convert to fraction form
7,882,985.40/10,878,535.80 = 4,261,313.40/x - Step 3: Cross multiply
7,882,985.40x = 10,878,535.80 × 4,261,313.40 - Step 4: Simplify right side
7,882,985.40x = 46,356,850,376,919.73 - Step 5: Solve for x
x = 46,356,850,376,919.73/7,882,985.40 - Step 6: Final answer
x = 5,880,621.11
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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.