Finding the Fourth Proportional to 10,210,819.20, 15,316,228.80 and 8,321,251.20
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Solution
The fourth proportional to 10,210,819.20, 15,316,228.80 and 8,321,251.20 is: 12,481,876.80
Step by Step Solution
- Step 1: Write the proportion equation
10,210,819.20 : 15,316,228.80 = 8,321,251.20 : x - Step 2: Convert to fraction form
10,210,819.20/15,316,228.80 = 8,321,251.20/x - Step 3: Cross multiply
10,210,819.20x = 15,316,228.80 × 8,321,251.20 - Step 4: Simplify right side
10,210,819.20x = 127,450,187,281,474.56 - Step 5: Solve for x
x = 127,450,187,281,474.56/10,210,819.20 - Step 6: Final answer
x = 12,481,876.80
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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.