Finding the Fourth Proportional to 369,087.80, 553,631.70 and 322,431.80
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Solution
The fourth proportional to 369,087.80, 553,631.70 and 322,431.80 is: 483,647.70
Step by Step Solution
- Step 1: Write the proportion equation
369,087.80 : 553,631.70 = 322,431.80 : x - Step 2: Convert to fraction form
369,087.80/553,631.70 = 322,431.80/x - Step 3: Cross multiply
369,087.80x = 553,631.70 × 322,431.80 - Step 4: Simplify right side
369,087.80x = 178,508,465,568.06 - Step 5: Solve for x
x = 178,508,465,568.06/369,087.80 - Step 6: Final answer
x = 483,647.70
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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.