Finding the Fourth Proportional to 691,721.08, 1,037,782.16 and 286,838.11
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Solution
The fourth proportional to 691,721.08, 1,037,782.16 and 286,838.11 is: 430,340.32
Step by Step Solution
- Step 1: Write the proportion equation
691,721.08 : 1,037,782.16 = 286,838.11 : x - Step 2: Convert to fraction form
691,721.08/1,037,782.16 = 286,838.11/x - Step 3: Cross multiply
691,721.08x = 1,037,782.16 × 286,838.11 - Step 4: Simplify right side
691,721.08x = 297,675,471,931.93 - Step 5: Solve for x
x = 297,675,471,931.93/691,721.08 - Step 6: Final answer
x = 430,340.32
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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.