Finding the Fourth Proportional to 411,871.91, 617,789.80 and 112,351.50
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Solution
The fourth proportional to 411,871.91, 617,789.80 and 112,351.50 is: 168,522.32
Step by Step Solution
- Step 1: Write the proportion equation
411,871.91 : 617,789.80 = 112,351.50 : x - Step 2: Convert to fraction form
411,871.91/617,789.80 = 112,351.50/x - Step 3: Cross multiply
411,871.91x = 617,789.80 × 112,351.50 - Step 4: Simplify right side
411,871.91x = 69,409,608,209.24 - Step 5: Solve for x
x = 69,409,608,209.24/411,871.91 - Step 6: Final answer
x = 168,522.32
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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.