Finding the Fourth Proportional to 899,995.58, 1,242,306.42 and 518,174.54
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Solution
The fourth proportional to 899,995.58, 1,242,306.42 and 518,174.54 is: 715,260.80
Step by Step Solution
- Step 1: Write the proportion equation
899,995.58 : 1,242,306.42 = 518,174.54 : x - Step 2: Convert to fraction form
899,995.58/1,242,306.42 = 518,174.54/x - Step 3: Cross multiply
899,995.58x = 1,242,306.42 × 518,174.54 - Step 4: Simplify right side
899,995.58x = 643,731,557,722.55 - Step 5: Solve for x
x = 643,731,557,722.55/899,995.58 - Step 6: Final answer
x = 715,260.80
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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.