Finding the Fourth Proportional to 768,659.10, 1,063,175.67 and 679,235.10
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Solution
The fourth proportional to 768,659.10, 1,063,175.67 and 679,235.10 is: 939,488.30
Step by Step Solution
- Step 1: Write the proportion equation
768,659.10 : 1,063,175.67 = 679,235.10 : x - Step 2: Convert to fraction form
768,659.10/1,063,175.67 = 679,235.10/x - Step 3: Cross multiply
768,659.10x = 1,063,175.67 × 679,235.10 - Step 4: Simplify right side
768,659.10x = 722,146,232,530.02 - Step 5: Solve for x
x = 722,146,232,530.02/768,659.10 - Step 6: Final answer
x = 939,488.30
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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.