Finding the Fourth Proportional to 1,224,357.12, 1,689,603.84 and 687,813.12
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Solution
The fourth proportional to 1,224,357.12, 1,689,603.84 and 687,813.12 is: 949,177.06
Step by Step Solution
- Step 1: Write the proportion equation
1,224,357.12 : 1,689,603.84 = 687,813.12 : x - Step 2: Convert to fraction form
1,224,357.12/1,689,603.84 = 687,813.12/x - Step 3: Cross multiply
1,224,357.12x = 1,689,603.84 × 687,813.12 - Step 4: Simplify right side
1,224,357.12x = 1,162,131,688,754.38 - Step 5: Solve for x
x = 1,162,131,688,754.38/1,224,357.12 - Step 6: Final answer
x = 949,177.06
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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.