Finding the Fourth Proportional to 723,903.91, 998,987.01 and 397,219.06
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Solution
The fourth proportional to 723,903.91, 998,987.01 and 397,219.06 is: 548,162.09
Step by Step Solution
- Step 1: Write the proportion equation
723,903.91 : 998,987.01 = 397,219.06 : x - Step 2: Convert to fraction form
723,903.91/998,987.01 = 397,219.06/x - Step 3: Cross multiply
723,903.91x = 998,987.01 × 397,219.06 - Step 4: Simplify right side
723,903.91x = 396,816,681,064.41 - Step 5: Solve for x
x = 396,816,681,064.41/723,903.91 - Step 6: Final answer
x = 548,162.09
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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.