Finding the Fourth Proportional to 684,743.90, 1,027,115.85 and 640,129.10
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Solution
The fourth proportional to 684,743.90, 1,027,115.85 and 640,129.10 is: 960,193.65
Step by Step Solution
- Step 1: Write the proportion equation
684,743.90 : 1,027,115.85 = 640,129.10 : x - Step 2: Convert to fraction form
684,743.90/1,027,115.85 = 640,129.10/x - Step 3: Cross multiply
684,743.90x = 1,027,115.85 × 640,129.10 - Step 4: Simplify right side
684,743.90x = 657,486,744,656.24 - Step 5: Solve for x
x = 657,486,744,656.24/684,743.90 - Step 6: Final answer
x = 960,193.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.