Finding the Fourth Proportional to 643,603.24, 888,214.92 and 371,682.56
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Solution
The fourth proportional to 643,603.24, 888,214.92 and 371,682.56 is: 512,946.45
Step by Step Solution
- Step 1: Write the proportion equation
643,603.24 : 888,214.92 = 371,682.56 : x - Step 2: Convert to fraction form
643,603.24/888,214.92 = 371,682.56/x - Step 3: Cross multiply
643,603.24x = 888,214.92 × 371,682.56 - Step 4: Simplify right side
643,603.24x = 330,133,995,295.80 - Step 5: Solve for x
x = 330,133,995,295.80/643,603.24 - Step 6: Final answer
x = 512,946.45
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1.5x scale
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.