Finding the Fourth Proportional to 1,478,509.76, 2,217,430.17 and 679,022.75
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Solution
The fourth proportional to 1,478,509.76, 2,217,430.17 and 679,022.75 is: 1,018,380.51
Step by Step Solution
- Step 1: Write the proportion equation
1,478,509.76 : 2,217,430.17 = 679,022.75 : x - Step 2: Convert to fraction form
1,478,509.76/2,217,430.17 = 679,022.75/x - Step 3: Cross multiply
1,478,509.76x = 2,217,430.17 × 679,022.75 - Step 4: Simplify right side
1,478,509.76x = 1,505,685,520,879.22 - Step 5: Solve for x
x = 1,505,685,520,879.22/1,478,509.76 - Step 6: Final answer
x = 1,018,380.51
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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.