Finding the Fourth Proportional to 817,489.40, 1,128,233.58 and 495,190.04
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Solution
The fourth proportional to 817,489.40, 1,128,233.58 and 495,190.04 is: 683,421.74
Step by Step Solution
- Step 1: Write the proportion equation
817,489.40 : 1,128,233.58 = 495,190.04 : x - Step 2: Convert to fraction form
817,489.40/1,128,233.58 = 495,190.04/x - Step 3: Cross multiply
817,489.40x = 1,128,233.58 × 495,190.04 - Step 4: Simplify right side
817,489.40x = 558,690,031,609.54 - Step 5: Solve for x
x = 558,690,031,609.54/817,489.40 - Step 6: Final answer
x = 683,421.74
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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.