Finding the Third Proportional to 390,489.75 and 603,430.88
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Solution
The third proportional to 390,489.75 and 603,430.88 is: 932,492.65
Step by Step Solution
- Step 1: Write the proportion equation
390,489.75 : 603,430.88 = 603,430.88 : x - Step 2: Convert to fraction form
390,489.75/603,430.88 = 603,430.88/x - Step 3: Cross multiply
390,489.75x = 603,430.88 × 603,430.88 - Step 4: Simplify right side
390,489.75x = 364,128,820,903.27 - Step 5: Solve for x
x = 364,128,820,903.27/390,489.75 - Step 6: Final answer
x = 932,492.65
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Why These Related Problems?
These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.