Finding the Fourth Proportional to 2,130,313.99, 2,939,905.85 and 1,259,894.83
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Solution
The fourth proportional to 2,130,313.99, 2,939,905.85 and 1,259,894.83 is: 1,738,697.76
Step by Step Solution
- Step 1: Write the proportion equation
2,130,313.99 : 2,939,905.85 = 1,259,894.83 : x - Step 2: Convert to fraction form
2,130,313.99/2,939,905.85 = 1,259,894.83/x - Step 3: Cross multiply
2,130,313.99x = 2,939,905.85 × 1,259,894.83 - Step 4: Simplify right side
2,130,313.99x = 3,703,972,173,751.71 - Step 5: Solve for x
x = 3,703,972,173,751.71/2,130,313.99 - Step 6: Final answer
x = 1,738,697.76
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.