Finding the Fourth Proportional to 1,564,979.40, 2,349,218.70 and 1,211,560.20
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Solution
The fourth proportional to 1,564,979.40, 2,349,218.70 and 1,211,560.20 is: 1,818,694.79
Step by Step Solution
- Step 1: Write the proportion equation
1,564,979.40 : 2,349,218.70 = 1,211,560.20 : x - Step 2: Convert to fraction form
1,564,979.40/2,349,218.70 = 1,211,560.20/x - Step 3: Cross multiply
1,564,979.40x = 2,349,218.70 × 1,211,560.20 - Step 4: Simplify right side
1,564,979.40x = 2,846,219,878,015.74 - Step 5: Solve for x
x = 2,846,219,878,015.74/1,564,979.40 - Step 6: Final answer
x = 1,818,694.79
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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.