Finding the Fourth Proportional to 723,904.91, 998,988.39 and 397,220.06
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Solution
The fourth proportional to 723,904.91, 998,988.39 and 397,220.06 is: 548,163.47
Step by Step Solution
- Step 1: Write the proportion equation
723,904.91 : 998,988.39 = 397,220.06 : x - Step 2: Convert to fraction form
723,904.91/998,988.39 = 397,220.06/x - Step 3: Cross multiply
723,904.91x = 998,988.39 × 397,220.06 - Step 4: Simplify right side
723,904.91x = 396,818,228,215.10 - Step 5: Solve for x
x = 396,818,228,215.10/723,904.91 - Step 6: Final answer
x = 548,163.47
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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.