Finding the Fourth Proportional to 4,127,124.30, 6,190,686.45 and 1,287,231.90
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Solution
The fourth proportional to 4,127,124.30, 6,190,686.45 and 1,287,231.90 is: 1,930,847.85
Step by Step Solution
- Step 1: Write the proportion equation
4,127,124.30 : 6,190,686.45 = 1,287,231.90 : x - Step 2: Convert to fraction form
4,127,124.30/6,190,686.45 = 1,287,231.90/x - Step 3: Cross multiply
4,127,124.30x = 6,190,686.45 × 1,287,231.90 - Step 4: Simplify right side
4,127,124.30x = 7,968,849,081,337.76 - Step 5: Solve for x
x = 7,968,849,081,337.76/4,127,124.30 - Step 6: Final answer
x = 1,930,847.85
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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.